Question

state the mirror formula and calculate the number of images formed in two plane mirrors,when they are held at the angle of 72​

Answer 1

Answer:

5 images

Explanation:

the formula:-

number of images formed = 360 degrees/angle between mirrors

if the number of images is odd, then that will be the answer.

if the number of images is even (after using the above formula), then we will subtract 1 from it.

now, angle between the mirrors = 72 degrees

so, number of images formed = 360 degrees/angle

= 360/72

= 5 images

now, since the number of images formed is an odd number, we will NOT subtract 1 from it.

therefore, 5 images will be formed