HARD
10th CBSE
IMPORTANT
Earn 100

Explain the process of accommodation in the human eye.

Important Questions on Refraction of Light

MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 4
What is myopia (near-sightedness)? Explain with a ray diagram 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 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.