Home
Class 11
PHYSICS
The angle of a crown glass prism of refr...

The angle of a crown glass prism of refractive index 1.52 is `6^(@)` . What should be the angle of a flint glass prism of refractive index `1.65` , so that the two prisms produce a direct vision prism ?

A

`3.5 ^(@)`

B

`4.8 ^(@)`

C

`5.4 ^(@)`

D

`2.5^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
In a direct vision prism , we get dispersion without deviations . For this we combine two prisms of different materials and of different angles . The condition for dispersion without deviation is
`(A)/(A') = (n'_(y) - 1)/(n_(y) - 1)`
`therefore (6^(@))/(A') = (1.65 -1)/(1.52 - 1) = (0.65)/(0.52) = (5)/(4)`
`therefore A' = ((4)/(5) xx 6^(@)) = 4.8^(@)`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    MARVEL PUBLICATION|Exercise Test Your Grasp|10 Videos

  • RAY OPTICS (MIRRORS, LENSES AND OPTICAL INSTRUMENTS)

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

  • VECTORS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

Similar Questions

Explore conceptually related problems

In a direct vision spectrograph , there are 3 crown glass prisms and 2 flint glass prisms , each of refracting angle 24^(@) . What should be the angle of the crown glass prism , if the refractive index of crown glass for mean colour is 1.52 and that of flint-glass of 1.65 ?

The angle of crown glass (mu=1.52) prism is 5^(@) .What should be angle flint glass (mu=1.63) .Prism ,so that the two prism may be used in direct vision spectroscope?

A thin glass prism of angle 6^(@) of refractive index 1.5 is combined with another glass prism of refractive index 1.6 to produce dispersion without deviation. What is the angle of the second prism ?

The refractive angle of a prism is 60^(@) . What is the angle of minimum deviation, if the refractive index of the material of the prism is sqrt2 ?

A thin prism of angle 15^@ made of glass of refractive index mu_1=1.5 is combined with another prism of glass of refractive index mu_2=1.75 . The combination of the prisms produces dispersion without deviation. The angle of the second prism should be

The angle of a glass prism is 4.5^(@) and its refractive index is 1.52. The angle of minimum deviation will be

A prism of crown glass having angle of refractive as 3^(@) and refractive index = 1.51 is combined with one flint glass prism of refractive index = 1.65 to produce dispersion without deviation. Find the angle of flint glass and net dispersion. Given, mu_(v) = 1.523, mu_(R) = 1.513 (for crown glass) mu'_(v) = 1.665, mu'_(R) = 1.645 (for flint glass)

A thin prism of angle 15^(@) made of glass of refractive index mu_(1)=1.5 is combined with another prism of glass of refractive index mu_(2)=1.75 . The combination of the prism produces dispersion without deviation. The angle of the second prism should be

A small angled prism of refractive index 1.6 gives a deviation of 3.6^(@) . The angle of prism is ________.

A prism of crown glass with refracting angle of 5^(@) and mean refractive index = 1.151 is combined with a flint glass prism of refractive index = 1.65 to produce deviation. Find the angle of fliint glass.