Find the power of a concave lens of focal length $2 \mathrm{m}$.

Important Questions on Light - Reflection and Refraction

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 1

Which one of the following materials cannot be used to make a lens?

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 2

The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 3

Where should an object be placed in front of a convex lens to get a real image of the same size of the object? 

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 4

Both spherical mirror and a thin spherical lens have a focal length of $-15 \mathrm{cm}$. The mirror and the lens are likely to be 

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 5

No matter how far you stand from a mirror, your image appears erect and smaller than you. The mirror is likely to be 

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 6

Which of the following lenses would you prefer to use while reading small letters found in a dictionary? 

HARD

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 7

We wish to obtain an erect image of an object, using a concave mirror of focal length $15 \mathrm{cm}$. What should be the range of distance of the object from the mirror? What is the nature of the image? Is the image larger or smaller than the object? Draw a ray diagram to show the image formation in this case. 

EASY

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 8

Name the type of mirror used in the following situations. (a) Headlights of a car. (b) Side/rear-view mirror of a vehicle. (c) Solar furnace.