Question

how many images will form if an object is kept between 2 plain mirror inclined at 60 degrees? ​

Answer 1

Required Answer:-

The formula given for finding the numbe rod images formed when two mirrors are placed inclined to each other: 360° / Θ

Where,

• Θ is the angle made between the two mirrors inclined to each other.

But,

• We should keep in mind that, whether the number of images formed is even/odd. If even, then number of images: 360° / Θ - 1 and if odd, then number of images: 360° / Θ$.$

Coming to question,

• Θ = 60°
• Then, 360° / 60° = 6

The result formed is even. Then, the number of images formed by the mirrors = 6 - 1 = 5 (Ans)

Note:-

When the number images is odd:

• Placed symmetrically, then number of images formed is 360° / Θ - 1 because one of the image overlaps in the angle bisector.
• Placed asymmetrically, number of images = 360° / Θ

Answer 2

formula to find no.of images is

=360°/ Θ -1

here ,

Θ =60°

Now,

=360/60-1

=6-1

=5

SINCE 5 IMAGES WILL FORM IF AN OBJECT IS KEPT BETWEEN 2 PLAIN MIRROR INCLINED AT 60° .