Question

Or, An object of size 5 cm is placed in front of a
concave mirror at a distance 25 cm. The focal
length of the mirror is 15 cm. Where the screen
should be placed to have a distinct image? What
will be the size of the image?
​

Answer 1

Explanation:

Measure distance BC. It will be found to be equal to 6 cm. Thus, object is placed at a distance of 6 cm × 5 = 30 cm from the lens. An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm