Question

Two plane mirrors are inclined at angle 40°between them .Number of images seen of a tiny object kept between them is ? ....

Answer 1

Answer:

Well, not going into the details of the geometrical interpretation of the problem, you'll learn it sooner on later or I suggest you to read about the topic on Wikipedia or any where on the web.

Well,there's a formula that'll lead you directly to the answer.

If n = 360°/ angle of inclination between the mirrors

Then, the no of images formed = n-1

= (360°/Angle in degrees)-1

Now, if angle = 40°

So,

No of images = 360°/40° - 1 = 8 images.