An object 4 cm in size is placed at a distance of 25 cm from a concave mirror of focal length 15 cm.

Q- An object 4 cm in size is placed at a distance of 25 cm from a concave mirror of focal length 15 cm. At what distance from the mirror should the screen be kept so that a sharp image of the object can be obtained on screen? Find the nature and height of the image.

[@Lisaa_kerala..]

Hlo bhaiyya I had so many problems with calculations in physics and By seeing your videos its very easy You explains soo nicely
Love from kerala💞

[@user-gr7yo5py9h]

Thank you so much sir for your explanation ❤❤❤❤

[@radhabeautyparlour2668]

Sir why we finding h'

[@_Diya___das_]

Because question asked us to

[@Lisaa_kerala..]

Hy h' is the symbol for size of image and it is asked in the question to find the size of image

[@radhabeautyparlour2668]

Oh thanks

[@ananya_s_club]

But why it is enlarged as when magnification is less then 1 the image is diminished and when it is greater than 1 the image is enlarged ,here the magnification is -1.5cm ,can someone explain?

[@Arckuo]

@@ananya_s_club the magnification we found in this question is -1.5cm. You might misunderstand the concept of magnification. Here the (-) sign indicates that the image is inverted, and if the magnification is in positive so the image will be erect. It doesn't matter whether the magnification is in (-) or (+) we have to check that the image magnification is greater than 1. Like in the ques the magnification is -1.5 we have to ignore the sign whether it is positive or negative we have to see that the magnification is greater than 1 (I hope it helps)

[@himanshusirvastav6453]

Brother is question me 'v' ko ham negative nahi lenge kiya ? Kiyu ki concave me to v- me hota ha

[@himanshusirvastav6453]

Please reply brother

[@user_killer6393]

Concave me u negative hota h v ki value tho nikali h 👍🏻

[@Pianastic_z]

Thanks 😊

[@avaneesh-rider]

Please explain alll theorem and question from chapter Quadrilateral and Triangle

[@keshabsharma9160]

Kindly explain me how and why size is enlarged
Though its magnification is -1. 5

[@TheBestGuitaristForReal]

Negative means that the image is real and inverted. If magnification is equal to 1 then image size is equal. If 0 is less then m greater then 1, then m is smaller than the object. Hope you find it helpful and if magnification is positive, then image is erect and virtual.

[@TheBestGuitaristForReal]

Negative means that the image is real and inverted. If magnification is equal to 1 then image size is equal. If 0 is less then m greater then 1, then m is smaller than the object. Hope you find it helpful and if magnification is positive, then image is erect and virtual.

[@kamisettyswetha6106]

How the size is enlarged

[@Abhay_023]

.. Because Height of image is large than 1
Magnification of this question is 1.5 means Enlarge..

[@Arckuo]

the magnification we found in this question is -1.5cm. You might misunderstand the concept of magnification. Here the (-) sign indicates that the image is inverted, and if the magnification is in positive so the image will be erect. It doesn't matter whether the magnification is in (-) or (+) we have to check that the image magnification is greater than 1. Like in the ques the magnification is -1.5 we have to ignore the sign whether it is positive or negative we have to see that the magnification is greater than 1 (I hope it helps)

[@user-so1nx2tf3j]

​@@Arckuo bro saved me lmfaoo

[@enayathenayath2215]

Sir exploitation fast hai sir and detail explain kariye sir

[@rekhachopra4162]

ㄘㄗㄊㄜˇㄜㄘˉㄨㄊㄧㄊㄙ