1
Question
What is the angle of incidence if a ray of light is not deviated when it enters a block of glass?
What is the angle of incidence if a ray of light is not deviated when it enters a block of glass?
Open in App
Solution
The correct option is D 0∘
The angle of incidence if a
ray of light is not deviated when it enters a block of glass :
The angle of incidence is
equal to angle of refraction only if the angle the deviation is zero. This is
practically impossible since, when light enters a medium from another medium it
has to undergo refraction. So angle of minimum deviation is never zero but it
can be a very small value. And angle of incidence is never equal to angle of
refraction, if the light undergoes minimum deviation. But the angle of
incidence is equal to the angle of emergence.
The angle of incidence if a ray of light is not deviated when it enters a block of glass :
The angle of incidence is equal to angle of refraction only if the angle the deviation is zero. This is practically impossible since, when light enters a medium from another medium it has to undergo refraction. So angle of minimum deviation is never zero but it can be a very small value. And angle of incidence is never equal to angle of refraction, if the light undergoes minimum deviation. But the angle of incidence is equal to the angle of emergence.
Suggest Corrections
0
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
