MEDIUM
10th CBSE
IMPORTANT
Earn 100

What is myopia (near-sightedness)? Explain with a ray diagram how it can be corrected using a lens.

Important Questions on Refraction of Light

HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 5
What is hypermetropia (far-sightedness)? Write two causes for the development of this defect. Explain how it can be corrected using a lens.  
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 6
Describe briefly why stars twinkle.
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 7
Why does the sun become visible even before it actually rises above the horizon at sunrise?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 1
The refractive indices of water and glass are 4/3 and 3/2 respectively. Find the speed of light in each.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 2
A ray of light travelling in air falls on the surface of a transparent material at an angle of 45° to the normal. It bends by 15° after refraction. Find the refractive index of the material.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 3
A ray of light travelling in air is incident on the surface of a plastic slab at an angle. If the angle of refraction is 30°, and the refractive index of the plastic is 3, find the angle of incidence.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 4
Light is incident on a clear-plastic block at an angle of 45°. The speed of light in the plastic is c/2, where c is the speed of light in vacuum. Find the angle of refraction.
EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 5
Find the refractive index of air with respect to water (nwater=4/3)