HARD

JEE Main

IMPORTANT

Earn 100

The apparent depth of water in a cylindrical water tank of diameter $2 R cm$ is reducing at the rate of $x cm \min$ when water is being drained out at a constant rate. The amount of water drained in $cc \min^{- 1}$ is ( $n_{1}$ is the refractive index of air and $n_{2}$ is the refractive index of water)

50% studentsanswered this correctly

Important Questions on Ray Optics

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 1

For a concave mirror, if a real image is formed, then the graph between

\frac{1}{u}

and

\frac{1}{v}

is of the form

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 2

In an experiment, the focal length of a concave mirror on a graph is drawn between the magnitudes of

u

and

v

. The graph looks like

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 2

A ray of light falls on the surface of a spherical glass paper weight, making an angle

α

with the normal and is refracted in the medium at an angle

β

. The angle of deviation of the emergent ray from the direction of the incident ray is

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 8

A small fish $0.4 m$ below the surface of a lake is viewed through a simple converging lens of focal length $3 m$ . The lens is kept at $0.2 m$ above the water surface such that the fish lies on the optical axis of the lens. The image of the fish seen by observer will be at $(μ_{water} = \frac{4}{3})$ ,

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 10

The object distance

u

, the image distance

v

, and the magnification

m

in a lens follow certain linear relations. These are,

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 2

The focal length of an objective and eye lens of an astronomical telescope are

2 m

and

5 cm

, respectively. Final image is formed at,

(i)

least distance of distinct vision

(i i)

infinity. The magnifying power in both cases will be

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 6

If the focal length of objective and eye lens are

1.2 cm

and

3 cm

, respectively and the object is put

1.25 cm

away from the objective lens and the final image is formed at infinity. The magnifying power of the microscope is

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics JEE Main & Advanced>Chapter 1 - Ray Optics>DPP>Q 10

The diameter of moon is

3.5 \times 10^{3} km

and its distance from the earth is

3.8 \times 10^{5} km

. If it is seen through a telescope whose focal length for objective and eye lens are

4 m

and

10 cm

, respectively, then the angle subtended by the moon on the eye will be approximately

The apparent depth of water in a cylindrical water tank of diameter 2 R cm is reducing at the rate of x cm min when water is being drained out at a constant rate. The amount of water drained in cc min-1 is ( n1 is the refractive index of air and n2 is the refractive index of water)

Important Questions on Ray Optics

Learn and Prepare for any exam you want !