Question

When an object is placed 8 millimeters from a concave spherical mirror, a clear image can be projected on a screen 16 millimeters in front of the mirror. If the object has a height of 4 millimeters, the height of the image is _________ millimeters. A. 4 B. 8 C. 12 D. 2

Answer 1

The height of the Image is 2 mm, option D.

Explanation :

We know that for concave mirrors,

u/v = Hi/Ho

where,

u = distance of the object,

v = distance of the image,

Hi = height of the image,

Ho = height of the object.

Hence from the given data, we get,

8/16 = Hi/4

=> Hi = 8 x 4 / 16

=> Hi = 2 mm.

Hence the height of the image is 2 mm.