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Consider a ray of light incident on a vertical plane mirror as shown. By what amount and in what sense should the mirror be rotated so that the ray becomes horizontal after reflection?

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Important Questions on Ray Optics and Optical Instruments

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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.1>Q 4
For which of the following angle between two plane mirrors, the incident ray and reflected ray from two mirrors are parallel to each other for all angle of incidence
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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.1>Q 5

A person of height h is standing in front of a plane mirror.

(a) What is the minimum size of the mirror so that complete image of the person is formed?

(b) What is the minimum size of the mirror so that the person can see his complete image ?

(c) Where should the top edge of the mirror be placed relative to the eyes and the head of the person, so that the person sees his complete image.

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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.2>Q 6
A convex mirror having focal length f forms an image 1n th of the size of the object. The distance of the object from the mirror is
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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.2>Q 8
Select the correct statement
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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.2>Q 9
What can be the minimum distance between an object and its real image formed by a concave mirror of focal length 10 cm ?
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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.2>Q 11
Which of the following graph is best representation of variation of magnification m with distance of object u for a concave mirror of focal length 10 cm if image is virtual?
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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.3>Q 12

In the shown figure ∠r is equal to

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Gamma Question Bank for Engineering Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE 9.3>Q 13
A ray of light strikes a glass plate at an angle 60°. If reflected and refracted rays are perpendicular to each other, then refractive index of the glass will be