Question

a. Two plane mirrors are set at right angles to each other. A coin is placed
between these two plane mirrors. How many images of coin will be seen?
b. What is persistence of vision?​

Answer 1

Answer:

there will be infinite image

the perisitence will be real same as image size

Explanation:

hope so helped u:)

Answer 2

(a) When 2 plane mirrors are set at right angles to each other and a coin is placed in between these two plane mirrors, then three images will be formed.

The formula for calculating the number of images, when two are kept at an angle θ, is given as: (360/θ) − 1

Now,θ = 90 degree.

Thus, the number of images formed will be

= (360/θ) − 1

= (360/90) – 1

= 4 – 1

= 3

(b) Your eye and brain retain a visual impression for about 1/30 of a second. (The exact time depends on the brightness of the image.) This ability to retain an image is known as persistence of vision. ... The eye retains the image of each frame long enough to give us the illusion of smooth motion.

Hope it helps☺

GM