Physics, asked by mathavan85, 11 months ago

size of image of obj by mirror having focal length 20 is observed to be +1/3 of ots size . At what distance object has been placed from mirror

Answers

Answered by srikanth2783

This was today asked in board set-3

Answered by emilantony03p40hrg

If the mirror is covex, focal length is 20cm, v=-u/3 and using mirror formula, answer will be u= -40cm

If mirror is concave, focal length is -20cm, v=u/3 and using mirror formula, u= -80cm.

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size of image of obj by mirror having focal length 20 is observed to be +1/3 of ots size . At what distance object has been placed from mirror ​

Answers

size of image of obj by mirror having focal length 20 is observed to be +1/3 of ots size . At what distance object has been placed from mirror