CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

"During refraction of light through the glass slab, incident ray and emergent ray are parallel to each other." Explain.

Open in App
Solution

If the angle of incidence and angle of emergence of a light ray falling on a glass slab are given then by applying snell’s law we can get

sinisinr=n2n1

When the light travels from the air to glass

sinisinr=μag

Now the light travels withing the glass the angle of incidence is equal to the angle of reflection

When light goes out of the glass into air then according to snells law

sinrsine=n1n2

sinrsine=μga

On multiplying the above two equation we get

sinisine=1

sini=sine

i=r

Hence the angle of incidence is equal to the angle of emergence and the rays are parallel to each other.


flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Refraction Through a Glass Slab and Refractive Index
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon