Question

Persistence of vision is the principle behind
A) Telescope
B) Periscope
C) Cinema
D) Microscope

Answer 1

Hii dude...
here your answer is...
B) periscope.....

Answer 2

Hey mate !!!

Question :-

Persistence of vision is the principle behind

A) Telescope

B) Periscope

C) Cinema

D) Microscope

Answer :-

Option B

Periscope.

In armys they use.

Hope this helps ^_^