A light beam is being reflected by using two mirrors,as in a periscope used in submarines.if one of the mirrors rotates by an angle $θ$ , the reflected light will deviate from its original path by the angle

2 θ

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3 θ

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θ

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4 θ

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Solution

The correct option is A $2 θ$
When a mirror is rotated by an angle a. The reflected ray deviate from its original path by angle $2 θ$ . Since the given angle is $θ$ and the deviation will be a multiple of $2$ . Thus, $2 θ$ will be the answer.

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A light beam is being reflected by using two mirrors,as in a periscope used in submarines.if one of the mirrors rotates by an angle θ, the reflected light will deviate from its original path by the angle

The correct option is A 2θWhen a mirror is rotated by an angle a. The reflected ray deviate from its original path by angle 2θ. Since the given angle is θ and the deviation will be a multiple of 2. Thus, 2θ will be the answer.

A light beam is being reflected by using two mirrors,as in a periscope used in submarines.if one of the mirrors rotates by an angle $θ$ , the reflected light will deviate from its original path by the angle

The correct option is A $2 θ$
When a mirror is rotated by an angle a. The reflected ray deviate from its original path by angle $2 θ$ . Since the given angle is $θ$ and the deviation will be a multiple of $2$ . Thus, $2 θ$ will be the answer.