What is lens formula?

Important Questions on Light: Reflection and Refraction

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 3

Object is placed between focus and lens, image formed is enlarged and on the same side as that of object. What is the nature of the lens?

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 4

What is the power of the convex lens of focal length $0.5 \mathrm{m}$?

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 5

How are power and focal length of a lens related? You are provided with two images of focal length $20 \mathrm{cm}$ and $40 \mathrm{cm}$ respectively. Which lens will you used to obtain more convergent light?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 6

What are Cartesian sign conventions used in spherical mirrors? What is the mirror formula?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 7

Distinguish between plane mirror, convex, and concave mirror without touching?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 8

Explain with the help of a diagram, why pencil partly immersed in water appears to be bent at the water surface.

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 9

How does the tank appear to a viewer from outside?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 1 - Part -1>Light: Reflection and Refraction>Q 10

What is lens formula? Give its sign conventions and assumptions.