Home
Class 8
PHYSICS
A ray of light strikes a glass slab 5 cm...

A ray of light strikes a glass slab 5 cm thick, making an angle of incidence equal to `30^(@)`. Construct the ray diagram showing the emergent ray and the refracted ray through the glass block. The refractive index of glass is 1.5. also, measure the lateral displacement of the ray. take. `sin19.5^(@)=1//3`.

Text Solution

Verified by Experts

Given: refractive index (n)=1.5
angle of incidence `(i)=30^(@)`

By Snell.s law, `(sini)/(sinr)=n`
`therefore sinr=(sini)/(n)=(sin30^(@))/(1.5)=(1//2)/(1.5)=(1)/(3)`
`implies angle r=19.5^(@)` (since `sin19.5^(@)=(1)/(3)`)
By measurement, on proper scale lateral displacement=1 cm nearly.
Promotional Banner

Similar Questions

Explore conceptually related problems

A ray of light falls on a glass prism at a angle of incidence of 30^(@) . Find the direction of the emergent ray if the angle of the prism is 60^(@) and refractive index is 1.50

A ray of light falls on a glass plate of refractive index mu=1.5 . What is the angle of incidence of the ray if the angle between the reflected and refracted rays is 90^@ ?

A ray of light falls on a glass slab at an incident angle of 45^(@) and refracted at angle of 30^(@) . What is the measure of the angle of emergence 'e' ?

The time taken by a ray of light to travel through a glass slab of thickness 2 cm and refractive index 1.5 will be

A ray of light strikes a glass plate at an angle of 40^(@) . If the reflected and refracted rays are perpendicular to each other the index of refractive of glass is

The refracting angle of a glass prism is 30^@. A ray is incident onto one of the faces perpendicular to it. Find the angle delta between the incident ray and the ray that leaves the prism. The refractive index of glass is mu=1.5.

A ray of light falls on a glass slab at an incident angle of 45^(@) and refracted at angle of 30^(@) . What is the refractive index of the glass with respect to air ?