Question

which angle forms between 2 plane mirrors when there are 7 images

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Answer 1

Answer:

The number of images formed when two mirrors are placed at an angle theta to each other is given by: n = ( 360 / theta ) - 1.

Here, n = 5, so ( 360 / theta ) = n+1 = 6, hence theta = 360/6 = 60 deg.

So the mirrors are placed at an angle of 60 deg with each other.

Step-by-step explanation:

Let the required angle be x.

Then, the number of images formed by the mirrors = (360°/x)-1

=> 5 = (360°/x)-1

=> 6 = 360°/x

=> x= 60°