Define focal length of a concave lens.

Important Questions on Refraction of Light

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 1

Which of the following figures represent the critical angle?

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 2

Write the reason for twinkling of stars in the sky.

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 4

Define optical centre of a lens.

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 5

Define centre of curvature of a lens.

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 6

What do you mean by principal focus of a convex lens.

EASY

10th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 5 - Refraction of Light>Kerala Board-2020>Q 7

Define focal length of a concave lens.