Define focus.

Important Questions on Refraction of Light

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 3

Write the rules about the formation of image by lens.

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 4

The picture formed on the screen at the theatre is real or virtual?

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 1

What is the minimum distance (in centimeters) at which a clear image can be visualized?

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 2

Where is the image formed in a human eye?

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 3

What is short-sightedness? How can it be rectified?

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>NOW ANSWER THESE>Q 4

What do you understand by longsightedness? How can this be rectified?

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>QUESTIONS FOR PRACTICE>Q 1

The refractive index of glass is

EASY

8th Chhattisgarh Board

IMPORTANT

Science & Technology Class - VIII>Chapter 9 - Refraction of Light>QUESTIONS FOR PRACTICE>Q 1

The point from which a light ray passes without any deviation is the