Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 4

MEDIUM

10th CBSE

IMPORTANT

Earn 100

What is the speed of light in a transparent medium which has a refractive index of $1.7$ . (The speed of light in vacuum is $3 \times 10^{8} {ms}^{- 1}$ ).

Important Questions on Reflection and Refraction

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 5

The refractive index of medium

A

with respect to medium

B

is

n_{A B} = 1.7

. Find

n_{B A}

.

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 6

The refractive index of medium

A

is

1.7

and that of

B

is

1.2

. Find

n_{B A}

. (Answer upto one decimal point)

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 7

Monochromatic light of wavelength

500 nm

is incident from air to glass. What is the wavelength of light in glass? The refractive index of glass is

1.5

.

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 8

If the angle of incidence for a ray of light moving from air to glass is

45 °

and the angle of refraction in glass is

30 °

, find the refractive index of glass.

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4C>Q 9

A ray of light moves from air into a glass slab. The refractive index of glass slab is

1.5

. What is the speed of light (in

m s^{- 1}

) in glass?

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4D>Q 1

Draw ray diagrams for objects placed at different positions in front of a convex lens.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4D>Q 2

An object is placed at

0.08 m

from a convex lens of focal length

0.1 m

. Calculate the position and nature of the image.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 4 - Reflection and Refraction>Practice Exercise 4D>Q 3

Find the power (in

D

) of a concave lens of focal length

3 m

.