MEDIUM

JEE Main/Advance

IMPORTANT

Earn 100

For an isosceles prism of angle $A$ and refractive index $μ$ , it is found that the angle of minimum deviation $δ_{m} = A$ . Which of the following options is/are correct?

50% studentsanswered this correctly

Important Questions on Ray Optics

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 32

Sunlight of intensity

1.3 kW m^{- 2}

is incident normally on a thin convex lens of focal length

20 cm

. Ignore the energy loss of light due to the lens and assume that the lens aperture size is much smaller than its focal length. The average intensity of light, in

kW m^{- 2}

, at a distance

22 cm

from the lens on the other side is __________.

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 33

A wire is bent in the shape of a right angled triangle and is placed in front of a concave mirror of focal length $f$ , as shown in the figure. Which of the figures shown in the four options qualitatively represent(s) the shape of the image of the bent wire? (These figures are not to scale.)

Question Image

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 34

A student measures the focal length of a convex lens by putting an object pin at a distance

u

from the lens and measuring the distance

v

of the image pin. The graph between

u

and

v

plotted by the student should look like

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 35

A transparent solid cylindrical rod has a refractive index of $\frac{2}{\sqrt{3}}$ . It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure.

Question Image

HARD

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 36

A car is fitted with a convex side view mirror of focal length

20 cm

. A second car

2.8 m

behind the first car is overtaking the first car is a relative speed of

15 m s^{- 1}

. The speed of the image of the second car as seen in the mirror of the first one is

HARD

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 37

Let the

x - y

plane be the boundary between two transparent media. Medium

1

z \geq 0

has a refractive index of

\sqrt{2}

and medium,

2

with

z < 0

has a refractive index of

\sqrt{3}

. A ray of light in medium

1

given by the vector

\vec{A} = 6 \sqrt{3} \hat{i} + 8 \sqrt{3} \hat{j} - 10 \hat{k}

in an incident on the plane of separation. The angle of refraction in the medium

2

is:

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 38

A beaker contains water upto a height

h_{1}

and kerosene of height

h_{2}

above water so that the total height of the (water + kerosene) is

h_{1} + h_{2}

. Refractive index of water is

μ_{1}

and that of kerosene is

μ_{2}

. The apparent shift in the position of the bottom of the beaker when viewed from above is

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 30 - Ray Optics>Exercise - 3>Q 39

When monochromatic red light is used instead of blue light in a convex lens, its focal length will

For an isosceles prism of angle A and refractive index μ, it is found that the angle of minimum deviation δm=A. Which of the following options is/are correct?

Important Questions on Ray Optics

Learn and Prepare for any exam you want !

For an isosceles prism of angle $A$ and refractive index $μ$ , it is found that the angle of minimum deviation $δ_{m} = A$ . Which of the following options is/are correct?