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A ray of light strikes a horizontal plane mirror at an angle of $45 °$ . A second plane mirror is attached at an angle $θ$ with it. If ray after reflection from second mirror runs parallel to the first mirror, then $θ$ is

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Important Questions on Geometric Optics

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 30

A ray of light makes an angle of

10 °

with the horizontal above it and strikes a plane mirror which is inclined at an angle

θ

to the horizontal. The angle

θ

for which the reflected ray becomes vertical is

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 31

A plane mirror is placed along the

Y

-axis such that

X

-axis is normal to the plane of the mirror. The reflecting surface of the mirror is towards negative

X

-axis. The mirror moves in positive

X

-direction with uniform speed of

5 m s^{- 1}

and a point object

P

is moving with constant speed

3 m s^{- 1}

in negative

X

-direction. The speed of image with respect to mirror is

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 32

A mirror is inclined at an angle of $θ$ with the horizontal. If a ray of light is incident at an angle of incidence $θ$ , then the angle makes by the reflected ray with makes horizontal is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 33

In a lake, a fish rising vertically to the surface of water uniformly at the rate of

3 m s^{- 1}

, observes a bird diving vertically towards the water at the rate of

9 m s^{- 1}

. The actual velocity of the dive of the bird is (Given, refractive index of water

= \frac{4}{3}

)

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JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 34

An equilateral prism deviates a ray through

45 °

for the two angles of incidence differing by

20 °

. The angle of incidence is

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JEE Advanced

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 35

A wavefront is represented by the plane

y = 3 - x

. The propagation of wave takes place at

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 36

A short linear object of length

b

lies along the axis of a concave mirror of focal length

f

at a distance

u

from the pole of the mirror, what is the size of image?

MEDIUM

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 2]>Q 37

A circular beam of light (diameter

= d

) falls on a plane surface of a liquid. The angle of incidence is

45 °

and refractive index of the liquid is

μ

. The diameter of the refracted beam is

A ray of light strikes a horizontal plane mirror at an angle of 45°. A second plane mirror is attached at an angle θ with it. If ray after reflection from second mirror runs parallel to the first mirror, then θ is

Important Questions on Geometric Optics

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A ray of light strikes a horizontal plane mirror at an angle of $45 °$ . A second plane mirror is attached at an angle $θ$ with it. If ray after reflection from second mirror runs parallel to the first mirror, then $θ$ is