Yes you will. For optics, screen my CZcams videos, there are three videos I provided for NECO examination on rectangular glass block titled model 1, 2 and 3. One of them is most similar to what you have
Please sir i am worried because I used your readings to plot my graph and my fellow class mates use a reading that is different from mine but our graph has the same structure and we got the same value for the slope in number three, please sir hope no problem if the table varies??
You are 100% right. Nothing to worry about. This is not a school examination. Almost all students using the same reading may even jeopardize their results. The most important thing is that your readings are in line with what is expected.
My question was. what if the range in which our teacher fill in their report form is different from mine or my values in the table is higher or lower than his range or is it that the range of the value is not part of what the teacher will fill in the report form?
Ok. Teachers don't submit values or range of values to WAEC or NECO in physics practicals unlike chemistry, where they submit end point. Let no person make you frightened. Physics practicals are marked with respect to expected variations. That is whether your values are increasing or decreasing uniformly as expected. This means that no set of values is taken as the standard marking scheme but how correct are your values to what is expected. If your teacher tells you that he submitted values to WAEC or NECO, tell him I said it is a white lie.
But sir what if the range of the value that our teacher fill in their report form is lower than mine? Or is it that the teacher is not the one to fill the range that all the values of the students should fall into?.
Your Teacher is the one that would fill the report form that would be packaged with your scripts and used by the examiner (marker) to judge all the students in your school. So your end point " VA " must agree with your teacher's own. If your teacher was not in school the examination day then he must have given the values to a colleague to fill for him. In a situation where the teacher forgets to include the report form, then the examiner (marker) must go through the whole scripts in your school and choose the average of the most random "VA " as the end point to judge all the students in a given school. Now see how it is marked: If your teacher's end point (VA) is 20.30 cm3 Then a student's whose VA is 20.30 + or - 0.10 cm3 scores maximum 8 marks on the table. That is a student whose VA is 20.20 or 20.30 or 20.40. A student whose VA is 20.30 + or - 0.20 cm3 (ie 20.10 or 20.50) scores 6 marks on the table A student whose VA is 20.30 + or - 0.30 cm3 (20.00 or 20.60) scores 4 marks A student whose VA lies 20.30 + or - 0.40 (19.90 or 20.70) scores 2 marks A student whose VA lies 20.30 + or - 0.50 (19.80 or 20.80) scores only 1 mark Any student whose VA lies outside the above mentioned limits ie from 0.60 of the teacher's end point scores zero on the table. Whether you scored maximum 8 marks on the table or zero does not affect your marks on the calculations that follow provided you used the right steps and formula to solve accurately. You guys have been advised over and over again to subscribe to the channel, turn your notification button on and be vigilant and not to start having regrets after the examination. You can never see our videos or post unless you have subscribed and have your notification button turned on. Then tune to the channel as from 10 pm to 11 midnight before the exam date.
Internal resistance of dry cells can vary considerably depending on the chemical constituents of the cell. It can be far higher than the range you specified, which you must have just goggled online. Dry cells are primary cells, supply lower current and are expected to have higher internal resistance. Unless you are talking about an accumulator, which is a secondary cell. Thanks
No, as the length increases, V decreases. Had it been we were asked to plot V against L, we would have gotten a negative graph and slope. To correct this anomaly, we were asked to find the inverse of V and plot it against L and this gave us an intercept C on the vertical axis which would be the E.M.F of the cell used. The connection of the standard resistor and the Constantan wire is in series. Don't swallow most of the manipulations you see on the you tube as being correct because most of them are wrong. Had it been that the connection between the Constantan wire and the standard resistor is in parallel, then the voltage would have have increased as the length increases provided the voltmeter is connected across both the resistor and the wire. Hope this explanation clarifies your fears. Thanks for your comment
When you plot a graph and let’s say it’s a straight line graph After drawing your straight line to connect the points on your graph sheet.....extend the line so it can cut across the vertical axis of your graph and check the point in your vertical axis where the line passed through That’s ur intercept
Follow the instructions, do the experiment and measure with a protractor. Put the mid point of the protractor between the two lines, read off the angles and take the difference
Who told you that. Stop making fictitious comments based on copying from CZcamsrs or past questions. Use your own data, find the inverse of V and plot against L and see the shape of graph you are going to have. How was the resistor and Constantan wire connected and where was the voltmeter connected. Go to previous comments and replies. You guys go to you tubers and copy manipulations without verifying whether it is right or wrong.
Watch the video and listen to the podcast. Yes, we did. You can still use a freshly charged accumulator of 2 V, however the readings would differ but the variations and shape of graph will be the same. The instructions says use two dry cells of EMF 1.5 V each or an accumulator
Thanks so much sir ❤
May God bless you 🙏🙏
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Thanks so much for taking your time at night to do it
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I wish you all the best. You save all 🙏
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Thank you so much sir 😊
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thank you so much sir God bless you
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Thank you so much Sir ❤❤✅
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Thanks So much 🙏🏻🙏🏻
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Thank you so muchhhhhh
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Hmmmm cant wait to comeback nd testify 😊😊
Smiles
Tanx
Ok. Perhaps we are using French
Thank you sir,buy please try and be raising your camera up while doing the video,so that we can have a clear view of it.
Ok
Thanks
We appreciate
Thanks sir
You are welcome
Good job sir more knowledge. Please for optics i we going to summit the white paper
Yes we would
Yes you will. For optics, screen my CZcams videos, there are three videos I provided for NECO examination on rectangular glass block titled model 1, 2 and 3. One of them is most similar to what you have
How did you get the pd od 1.03 from voltmeter
Sensitivity of the voltmeter you are using differs. There are different types.
Please explain the second angle and how to get it on the paper to be submitted
No traces to be submitted for this number
W mans frs
W is a constant mass used in the experiment and it is equal to 30 g
Please sir i am worried because I used your readings to plot my graph and my fellow class mates use a reading that is different from mine but our graph has the same structure and we got the same value for the slope in number three, please sir hope no problem if the table varies??
You are 100% right. Nothing to worry about. This is not a school examination. Almost all students using the same reading may even jeopardize their results. The most important thing is that your readings are in line with what is expected.
Sir pls how did you get ur values for V🙏🏽
Voltmeter readings
Sir how did you get your voltmeter V(v) which is 10.00=1.500
Read off from the instrument. Thanks
Sir how did you get the voltmeter V(v) 10.00= 1.500 and the rest
Same question I wanted to ask
Read off from the instrument
My question was. what if the range in which our teacher fill in their report form is different from mine or my values in the table is higher or lower than his range or is it that the range of the value is not part of what the teacher will fill in the report form?
Ok. Teachers don't submit values or range of values to WAEC or NECO in physics practicals unlike chemistry, where they submit end point. Let no person make you frightened. Physics practicals are marked with respect to expected variations. That is whether your values are increasing or decreasing uniformly as expected. This means that no set of values is taken as the standard marking scheme but how correct are your values to what is expected. If your teacher tells you that he submitted values to WAEC or NECO, tell him I said it is a white lie.
@@bestsciencebrain thank you sir for releasing me from thinking too much. I so much appreciate
How did you get the values of theater
Measure the angles with a protractor after doing the experiment
Sir please in this 1st question, I'll love to know how we got the figures of the cos sine
when you conduct the practical
Measure the angles with your protractor. Thanks
But sir what if the range of the value that our teacher fill in their report form is lower than mine? Or is it that the teacher is not the one to fill the range that all the values of the students should fall into?.
Your Teacher is the one that would fill the report form that would be packaged with your scripts and used by the examiner (marker) to judge all the students in your school. So your end point " VA " must agree with your teacher's own.
If your teacher was not in school the examination day then he must have given the values to a colleague to fill for him. In a situation where the teacher forgets to include the report form, then the examiner (marker) must go through the whole scripts in your school and choose the average of the most random "VA " as the end point to judge all the students in a given school. Now see how it is marked:
If your teacher's end point (VA) is 20.30 cm3
Then a student's whose VA is 20.30 + or - 0.10 cm3 scores maximum 8 marks on the table. That is a student whose VA is 20.20 or 20.30 or 20.40.
A student whose VA is 20.30 + or - 0.20 cm3 (ie 20.10 or 20.50) scores 6 marks on the table
A student whose VA is 20.30 + or - 0.30 cm3 (20.00 or 20.60) scores 4 marks
A student whose VA lies 20.30 + or - 0.40 (19.90 or 20.70) scores 2 marks
A student whose VA lies 20.30 + or - 0.50 (19.80 or 20.80) scores only 1 mark
Any student whose VA lies outside the above mentioned limits ie from 0.60 of the teacher's end point scores zero on the table.
Whether you scored maximum 8 marks on the table or zero does not affect your marks on the calculations that follow provided you used the right steps and formula to solve accurately.
You guys have been advised over and over again to subscribe to the channel, turn your notification button on and be vigilant and not to start having regrets after the examination. You can never see our videos or post unless you have subscribed and have your notification button turned on. Then tune to the channel as from 10 pm to 11 midnight before the exam date.
@@bestsciencebrain no sir I mean in physics
So pls what is the internal resistance now cause i know it is btw 0.5 and 1
Internal resistance of dry cells can vary considerably depending on the chemical constituents of the cell. It can be far higher than the range you specified, which you must have just goggled online. Dry cells are primary cells, supply lower current and are expected to have higher internal resistance. Unless you are talking about an accumulator, which is a secondary cell. Thanks
Did u carry out the eperiment or used formula
Done practically
Sir pls can just explain how get the v(v)
Read off from the voltmeter
Sir is the value for slope supposed to have unit?
In this case yes
Thank u sir
But isn't the voltage V meant to increase as the length increases
No V is supposed To decrease
No, as the length increases, V decreases. Had it been we were asked to plot V against L, we would have gotten a negative graph and slope. To correct this anomaly, we were asked to find the inverse of V and plot it against L and this gave us an intercept C on the vertical axis which would be the E.M.F of the cell used. The connection of the standard resistor and the Constantan wire is in series. Don't swallow most of the manipulations you see on the you tube as being correct because most of them are wrong. Had it been that the connection between the Constantan wire and the standard resistor is in parallel, then the voltage would have have increased as the length increases provided the voltmeter is connected across both the resistor and the wire. Hope this explanation clarifies your fears. Thanks for your comment
Please when should we expect optics question
Two questions are enough for the exam
Sir please i dont understand how we got the intercept. Do you mind explaining to me sir?
Thanks sir
When you plot a graph and let’s say it’s a straight line graph
After drawing your straight line to connect the points on your graph sheet.....extend the line so it can cut across the vertical axis of your graph and check the point in your vertical axis where the line passed through
That’s ur intercept
Read the reply above
Good job sir, please for the force board practical are we submitting the white paper
yes
No. There is no instructions to submit any paper. However, you are expected to do that in number 2 (rectangular glass block)
Thank you alot sir. I have a question the white paper for the mechnics are we going to submit it
No. It was not stated
@@bestsciencebrain thanks what of the optics is there ea chance we will need tot submit it
You have to attach the paper you sloved it in
How did you get the angle
Follow the instructions, do the experiment and measure with a protractor. Put the mid point of the protractor between the two lines, read off the angles and take the difference
Does the angle decrease or increase with increase of force
It creases 😅😂
Definitely, it must increase. As you add more forces, the ropes under AB draw lower, increasing the angles. Thanks
Sir must our slope be almost the same thing
No
Sir plz how do i get angle aoq
Kindly measure with a protractor after the experiment. Thanks
@@bestsciencebrain sir is dat the only way to find it
Pls sir can i use this exact values during the exam
Sir can we
Sure you can
Please can I use your values for the practical or it most be the same with other people's own
The values are ok, verified and correct. Readings can still differ but the similar variations or shapes of graphs are expected.
@@bestsciencebrainthanks sir
Please do you know values neco is using
Did you use acummulTor or dry cell?
How can 2V accumulator produce similar reading with 3V dry cell
Thank you sir
But please,must everyone answer same question? I mean what if others are writing maybe questions 2&3,can I still answer question 1?
Pls next time ,raise the camera
Okay. We apologize for that. Take the values, plot the graph, listen to the video. You will definitely get the same result. Thanks
Sir, i thought V increases as L increases
In this case, No. I have answered this. Kindly screen the comments for this type of question and the replies. Thanks
V is supposed to be increasing with increase in length naw
Who told you that. Stop making fictitious comments based on copying from CZcamsrs or past questions. Use your own data, find the inverse of V and plot against L and see the shape of graph you are going to have.
How was the resistor and Constantan wire connected and where was the voltmeter connected. Go to previous comments and replies. You guys go to you tubers and copy manipulations without verifying whether it is right or wrong.
How true is this
It's legit bro, I've checked
@@hopenduka-pd2ji so the answer is correct?
🏆
Please is these the final results
Sure
No sir I am talking about physics not chemistry
Ok
@@bestsciencebrain ok sir so what about my question
Sir you have not answered my question
Remind us your question please
Did u use two dry cell or?
yes
Watch the video and listen to the podcast. Yes, we did. You can still use a freshly charged accumulator of 2 V, however the readings would differ but the variations and shape of graph will be the same. The instructions says use two dry cells of EMF 1.5 V each or an accumulator
Sir hope is sure 😢
You should know by now
Is this today question for physics practical
Yes
I don't know
Sir are we to submit the A4 paper
yes
No. Unless you wish to. It was not stated that you should
Tnx sirr the question was the same
U didn't solve 1a ii
Ok
Is this today question
Yes
Yes
We don't know
You just sabed my practical 🥲
Thanks
Thanks so much sir
Thanks we appreciate
How did you get the values of theater
Measure with a protractor after the experiment
Is this today question for physics practical
Yes
I don't know
So why writing 100%@@bestsciencebrain
Is this the main question
Because it is 100%. Do you expect us to answer all comments!!
Thank you sir
You are welcome