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An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2. The focal length of the mirror is A. 15cm B. 20cm C. 25cm D. 30cm

An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified
real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2. The focal
length of the mirror is
A. 15cm B. 20cm C. 25cm D. 30cm

Grade:

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
576-215_cc.PNG
Vikas TU
14149 Points
3 years ago
576-215_cc.PNG
Dear student 
Please refer the clear image , 
The image above does not looks good , it is blurr.
Hope for the best 
Good Luck 
Cheers 
 

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