EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2020 General Ability Test>Q 6

EASY

NDA & NA EE

IMPORTANT

Earn 100

The refractive index of fused quartz is $1 \cdot 46$ and that of sapphire is $1 \cdot 77 .$ If $v_{q}$ is the speed of light in quartz and $v_{s}$ is the speed of light in sapphire, then which one of the following relations is correct?

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Important Questions on Ray Optics

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2020 General Ability Test>Q 7

In case of a concave mirror, if an object is kept between principal focus

F

and pole

P

of the mirror, then which one of the following statements about the image is not correct?

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 2 General Ability Test>Q 8

Which one of the following statements regarding lenses is not correct?

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 2 General Ability Test>Q 9

Light rays move in straight lines. But through an optical fibre, they can move in any type of zig-zag path because

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 1 General Ability Test>Q 10

The light energy escaping from the sun can be spread by

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 1 General Ability Test>Q 11

The focal length of the objective lens of a telescope is

50 cm .

If the magnification of the telescope is

25,

then the focal length of the eyepiece is

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 1 General Ability Test>Q 12

The sun is seen little before it rises and for a short while after it sets. This is because of

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Ray Optics>NDA & NA EE 2019 Paper 1 General Ability Test>Q 13

When a beam of white light passes through a glass prism, the colour of light beam that deviates the least is