Question

* 11.3 Mirrors at right angles to each other 360° n = - 1 A n= number of images, A = angle between the mirrors you obtained for different values of angles is​

Answer 1

Answer:

The number of images formed by two adjacent plane mirrors depends on the angle between the mirror. If (in degrees) is angle between the plane mirrors then number of images are given by, n = 360 θ − 1.

Place both the mirrors vertically with 180 degree angle between the them.

Place a lighted candle in the space between the two mirrors.

You will see single image of the candle in mirror. Reduce the angle between mirrors and observe multiple images of the candle which makes a beautiful scene.

Now, measure the maximum angle between two mirrors when you get 1, 3, 5, 7, and 9 images. These angles are .

Calculate for by using the formula given above.

Draw the ray diagram when angle between two mirrors is 90 degree.

Answer 2

Answer:

The formula to find the number of images between two mirrors inclined at theta deg to each other is 360/theta - 1 = 11, or

360/theta = 12, or

theta = 360/12 = 30 deg.

The two mirrors are inclined at 30 deg to each other.

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Explanation:

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