Distinguish between convex and concave lenses.

Important Questions on Light - Reflection and Refraction

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 21

Draw a ray diagram to illustrate the use of a convex lens as a magnifying glass. Why do we usually prefer a convex lens of short focal length than the one with long focal length?

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 22

An object is placed at a distance of $36 \mathrm{cm}$ from a convex lens of focal length $24 \mathrm{cm}$. Find the position and nature of the image formed.

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 23

Where should an object be placed in front of a convex lens of focal length $12 \mathrm{cm}$ to get an image $18 \mathrm{cm}$ away from the lens on the other side?

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 24

An object placed in front of a convex lens of focal length $8 \mathrm{cm}$ gives a virtual image $40 \mathrm{cm}$ away from the lens. Calculate the magnification of the image.

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 25

If a converging lens produces an inverted image that is three times the size of an object placed at a distance of $15 \mathrm{cm}$ from it, find the focal length of the lens.

HARD

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 26

A $2.0 \mathrm{cm}$ high object is placed at a distance of $8 \mathrm{cm}$ in front of a convex lens of focal length $16 \mathrm{cm}$. Find the position, nature and size of image formed.

HARD

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 27

When an object is placed at a distance of $8 \mathrm{cm}$ in front of a convex lens of focal length $16 \mathrm{cm}$. Find the position, nature and size of image formed.

MEDIUM

10th CBSE

IMPORTANT

Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 28

What is the nature of image formed by a convex lens if the magnification of the image is $-0.8$?