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A concave mirror has focal length ’ f ’ . A convergent beam of light is made incident on it . Then the image distance ‘ v ’ is ​a. zero ​b. less than ’ f’ c. equal to ’ f’ ​d. more than ’ f’ Ans ;- (b) less than ‘f’ Please explain in detail...........

A concave mirror has focal length ’f ’ . A convergent beam of light is made incident on it . Then the image distance ‘ v ’ is 
​a.  zero
​b.  less than ’f’
c.  equal to ’f’
​d.  more than ’f’
Ans ;- (b) less than ‘f’
Please explain in detail...........
 

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
The image distance will be less than f.

If a beam of light is incident on a concave mirror then the image is formed in the front of the mirror and is real in nature.
On extending the reflected ray, it is visible that the reflected rays intersect each other.
Also, the image formed is inverted in nature.

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