Ask a Doubt
Request a call back

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

CBSE Class 12-science Answered

state and explain huygens principle explain  how a reflected wavefront is constructed when light travels from denser medium to rarer medium
Asked by ap996969 | 23 Jan, 2019, 06:04: PM
answered-by-expert Expert Answer
Huygens principle states the following:
Each point of the wavefront is the source of a secondary disturbance and the wavelets emanating from these points spread out in all directions with the speed of the wave.
These wavelets emanating from the wavefront are usually referred to as secondary wavelets and if we draw a common tangent to all these spheres, we obtain the new position of the wavefront at a later time.
 
Huygens’ principle is essentially a geometrical construction, which gives the shape of the wave front at any time, allows us to determine the shape of the wavefront at a later time.
Wave-front of a wave, at any instant, is defined as the locus of all the particles in the medium which are being disturbed at the same instant of time and are in the same phase of vibration.
 
Construction of wavefront when light travels from denser medium to rarer medium:
 
 
The rays from different wave pointson the incident wavefront will take some point to reach the corresponding points on the refracted wavefront.
This is better explained by the following equation:
begin mathsize 12px style fraction numerator sin space straight i over denominator sin space straight r end fraction space equals space straight c over straight v end style 
Answered by Science Mate | 24 Jan, 2019, 12:57: AM
Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
huygens wave theory ?
Asked by rajawatmeena845 | 19 Jan, 2023, 07:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
wave lets means
Asked by rajawatmeena845 | 19 Jan, 2023, 07:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
when ray of light passes from one medium to another medium
Asked by komal2003patil | 17 Jul, 2020, 01:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Define Huygens Principle
Asked by bmoumita4141 | 01 Mar, 2020, 07:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
An object is placed at 10 cm distance infront of a concave mirror of radius of curvature of 20 cm. Find the position,nature and magnification of the image.
Asked by av601070 | 27 May, 2019, 02:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Hi
question image
Asked by jain.pradeep | 26 May, 2019, 06:54: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
define wave front.state  
Asked by chirag | 24 Feb, 2019, 09:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
use wave theory to verify the laws of reflection and law of reflection
Asked by ap996969 | 23 Jan, 2019, 06:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
state and explain huygens principle explain  how a reflected wavefront is constructed when light travels from denser medium to rarer medium
Asked by ap996969 | 23 Jan, 2019, 06:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
(a)  In young’s double slit experiment, deduce the conditions for obtaining constructive and destructive interference fringes. Hence, deduce the expression for the fringe width. (b)  Show that the fringe pattern on the screen is actually a superposition of slit diffraction from each slit. (c)   What should be the width of each slit to obtain 10 maxima of the double slit pattern within the central maximum of the single slit pattern, for green light of wavelength 500 nm, if the separation between two slits is 1 mm?
Asked by Topperlearning User | 10 Jul, 2015, 12:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt