EASY
10th ICSE
IMPORTANT
Earn 100

Explain the term critical angle with the aid of a labelled diagram.

Important Questions on Refraction of Light at Plane Surfaces

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 2
How is the critical angle related to the refractive index of a medium?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 3
State the approximate value of the critical angle for glass-air surface.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 3
State the approximate value of the critical angle for water-air surface.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 4
What is meant by the statement the critical angle for diamond is 24°?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 5
A light ray is incident from a denser medium on the boundary separating it from a rarer medium at an angle of incidence equal to the critical angle. What is the angle of refraction for the ray?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 6
Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 7
The critical angle for glass-air is 45° for the light of yellow colour. State whether it will be less than, equal to, or more than 45° for red light.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 4 - Refraction of Light at Plane Surfaces>EXERCISE-4(D)>Q 7
The critical angle for glass-air is 45° for the light of yellow colour. State whether it will be less than, equal to, or more than 45° for blue light.