Figure shows a plane mirror onto which a light ray is incident. If the incident light ray is turned ray is turned by $10^{o}$ and the mirror by $20^{o}$ as shown, find the angle turned by the reflected ray.

10^{o}

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20^{o}

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30^{o}

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40^{o}

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Solution

The correct option is C $30^{o}$
The reflected ray will turn $10^{0}$ due to incident ray and $40^{0}$ due to mirror in opposite direction
$∴$ Net rotation = $40 - 10$
$= 30^{0}$
Hence,
option $C$ is correct answer.

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Figure shows a plane mirror onto which a light ray is incident. If the incident light ray is turned ray is turned by 10o and the mirror by 20o as shown, find the angle turned by the reflected ray.

The correct option is C 30oThe reflected ray will turn 100 due to incident ray and 400 due to mirror in opposite direction ∴ Net rotation =40−10=300Hence,option C is correct answer.

Figure shows a plane mirror onto which a light ray is incident. If the incident light ray is turned ray is turned by $10^{o}$ and the mirror by $20^{o}$ as shown, find the angle turned by the reflected ray.

The correct option is C $30^{o}$
The reflected ray will turn $10^{0}$ due to incident ray and $40^{0}$ due to mirror in opposite direction
$∴$ Net rotation = $40 - 10$
$= 30^{0}$
Hence,
option $C$ is correct answer.