NEET  >  Reflection of Light, Refraction of Light & Refraction by a Lens

# Reflection of Light, Refraction of Light & Refraction by a Lens Video Lecture - Physics Class 12 - NEET

## Physics Class 12

154 videos|444 docs|185 tests

## FAQs on Reflection of Light, Refraction of Light & Refraction by a Lens Video Lecture - Physics Class 12 - NEET

 1. What is reflection of light?
Ans. Reflection of light is the process by which light waves bounce off a surface, changing direction but keeping the same frequency and wavelength. It occurs when light rays strike a smooth surface and are redirected back into the same medium.
 2. What is refraction of light?
Ans. Refraction of light is the bending of light waves as they pass from one medium to another, due to the change in speed. This phenomenon occurs because light waves travel at different speeds in different mediums, causing them to change direction at the boundary between the two mediums.
 3. How does refraction by a lens occur?
Ans. Refraction by a lens occurs when light passes through a lens and changes direction due to the change in refractive index between the lens material and the surrounding medium. This bending of light allows lenses to focus light rays and form images.
 4. What are the types of lenses based on refraction?
Ans. There are two types of lenses based on refraction: convex lenses and concave lenses. Convex lenses are thicker in the middle and thinner at the edges, causing light to converge and form real images. Concave lenses are thinner in the middle and thicker at the edges, causing light to diverge and form virtual images.
 5. How does refraction of light affect the appearance of objects in water?
Ans. When light enters water from air, it undergoes refraction, causing objects to appear shallower and closer to the surface than they actually are. This is because light rays bend towards the normal when entering a denser medium, such as water. As a result, objects in water may seem distorted or displaced compared to their actual position.

## Physics Class 12

154 videos|444 docs|185 tests

### Up next

 Explore Courses for NEET exam

### How to Prepare for NEET

Read our guide to prepare for NEET which is created by Toppers & the best Teachers
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Track your progress, build streaks, highlight & save important lessons and more!
Related Searches

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

;