Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

Why does'nt light bend when it falls perpendicularly on surface?(like glass slab)...Please explain with suitable diagram.
Asked by jgprmr | 17 Jun, 2017, 03:34: AM
answered-by-expert Expert Answer
If the incident ray falls on the glass slab perpendicularly or normally, it goes inside the slab un-deviated i.e there is no bending of light because of the following reasons:

As the incident rays passes along the normal to the surface, the angle of incidence becomes zero.
It is a known fact that angle of incidence and the angle of refraction are related to each other and are governed by Snell's Law i.e
 
begin mathsize 12px style Refractive space Index equals fraction numerator Sin space straight i over denominator Sin space straight r end fraction Refractive space Index cross times Sin space straight r equals Sin space 0 Refractive space Index cross times Sin space straight r equals 0 As space Refractive space Index not equal to 0 comma space Sin space straight r equals 0 straight r equals 0 degree end style
This explains why the angle of refraction is zero when the incident light falls normal or perpendicular to the glass slab.
 
Answered by Abhijeet Mishra | 17 Jun, 2017, 01:56: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Physics
how is light made
Asked by infinityupgraded | 13 Apr, 2024, 08:17: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
what are the ray diagrams??
Asked by suryamr2019 | 08 Mar, 2024, 04:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
what is refraction  
Asked by deepbhagat1090 | 13 May, 2023, 09:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
If sun emmit yellow light so how it turns into white when it enters in earth atmosphere and if the question is ansewable then does it happens in other planets too
Asked by ak23012007 | 25 Oct, 2022, 09:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
sir iska answer solve kr ke do
question image
Asked by vaishnavimishra2003 | 14 Jun, 2022, 07:45: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
what do you mean by refraction of light?
Asked by ajyaduvanshi9415 | 24 Jan, 2022, 11:34: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
how can you  find  the speed of the scooter that approches the mirror  
Asked by sentilkannan | 27 Nov, 2021, 11:44: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
What if A is not given in the angle of deviation formula?  i + e - A
Asked by gourimondal80 | 12 Nov, 2021, 08:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
define the refractive index of benzene if the critical angle of it is 42
Asked by ratnamaddala88 | 18 Oct, 2021, 08:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
The speed of light in a transparent medium is 0.6 times as that of its speed in vacuum. What is the refractive index of the medium? (a) 1.0 (b) 1.33 (c) 1.55 (d)1.66
Asked by ashmeetkaur873 | 17 Oct, 2021, 12:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×