What is the refractive index of vacuum?

Important Questions on Light - Reflection and Refraction

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 24

The refractive index of diamond is $2.42$. What is the meaning of this statement in relation to the speed of light?

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 25

A fish underwater is viewing obliquely a fisherman standing on the bank of the lake. Does the man look taller or shorter?

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 27

Which of the two is a converging lens: convex or concave?

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 28

A lens forms an inverted image of an object. What kind of lens is this?

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 29

Give the name of the point on the principal axis of a lens through which light passes undeviated.

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 30

Name a lens which forms always virtual and erect image.

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 31

Which lens is used as a magnifying glass?

EASY

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 32

Where should an object be placed in order to use a convex lens as a magnifying glass?