HARD

JEE Main

IMPORTANT

Earn 100

For a concave lens of focal length $f$ , the relation between object and image distance $u$ and $v,$ respectively, from its pole can best be represented by ( $u = v$ is the reference line):

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Important Questions on Ray Optics

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 5 September 2020 Shift 1>Q 42

A compound microscope consists of an objective lens of focal length

1 cm

and an eye piece of focal length

5 cm

with a separation of

10 cm .

The distance between an object and the objective lens, at which the strain on the eye is minimum is

\frac{n}{40} cm .

The value of

n

is.......

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 5 September 2020 Shift 2>Q 43

A prism of angle

A = 1 °

μ = 1.5

. A good estimate for the minimum angle of deviation (in degrees) is close to

\frac{N}{10} .

Value of

N

\dots \dots \dots

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 6 September 2020 Shift 1>Q 44

A point like object is placed at distance of

1 m

in front of a convex lens of focal length

0.5 m

. A plane mirror is placed at a distance of

2 m

behind the lens. The position and nature of the image formed by the system is

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 6 September 2020 Shift 2>Q 45

A double convex lens has power

P

and same radii of curvature

r

of both the surfaces. The radius of curvature of a surface of a plano-convex lens made of the same material with power

1.5 P

is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 7th January 2020 Shift 1>Q 46

If we need a magnification of

375

from a compound microscope of tube length

150 m m

and an objective of focal length

5 m m,

the focal length of the eye-piece, should be close to:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 7th January 2020 Shift 2>Q 47

A thin lens made of glass (refractive index

= 1.5

) of focal length

f = 16 c m

is immersed in a liquid of refractive index

1.42

. If its focal length in liquid is

f_{l}

, then the ratio

f_{l} / f

is closest to the integer:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 8th January 2020 Shift 1>Q 48

The critical angle of a medium for a specific wavelength, if the medium has relative permittivity

3

and relative permeability

\frac{4}{3}

for this wavelength, will be:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Ray Optics>JEE Main - 8th January 2020 Shift 1>Q 49

The magnifying power of a telescope with tube length

60 c m

5 .

What is the focal length of its eye piece?

For a concave lens of focal length f, the relation between object and image distance u and v, respectively, from its pole can best be represented by (u=v is the reference line):

Important Questions on Ray Optics

Learn and Prepare for any exam you want !

For a concave lens of focal length $f$ , the relation between object and image distance $u$ and $v,$ respectively, from its pole can best be represented by ( $u = v$ is the reference line):