Home
Class 12
PHYSICS
The refractive indices of filnt glass fo...

The refractive indices of filnt glass for red and violet light are 1.613 and 1.632 respectively. Find the angular dispersion prouduced by a thin prism of flint glass having refracting angle `5^@`

Text Solution

Verified by Experts

Deviation of the red light is `dleta_r= (mu_r - 1)A` and deviation of the violet light is `delta_(upsilon) = (mu_(upsilon) -1)A.` the dispersion `= delta_(upsilon) - delta_r =(mu_(upsilon) - mu_r)A`
`=(1.632 - 1.613)xx5^@`
`=0.095^@.`
Promotional Banner

Topper's Solved these Questions

  • DISPERSION AND SPECTRA

    HC VERMA|Exercise Question for short Answer|6 Videos

  • DISPERSION AND SPECTRA

    HC VERMA|Exercise Objective -1|5 Videos

  • DISPERSION AND SPECTRA

    HC VERMA|Exercise Exercises|11 Videos

  • CAPACITORS

    HC VERMA|Exercise Exercise|68 Videos

  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise Exercises|84 Videos

Similar Questions

Explore conceptually related problems

Refractive index of red and violet light are 1.52 and 1.54 respectively. If the angle of prism in 10^(@) . The angular dispersion will be

A certain material has refractive indices 1.56, 1.60 and 1.68 for red, yellow and violet light respectively. (a) Calculate the dispersive power. (b) Find the angular dispersion produced by a thin prism of angle 6° made of this material.

The refractive indices of silicate fint glass for wavelength 400 nm and 700 nm are 1.66 aned 1.61 respectively. Find the minimum angles of deviation of an equailateral prism made of this glass for light of wavelength 400 nm and 700 nm.

The focal lengths of a thin lens for red and violet light are 90.0 cm and 86.4cm respectively. Find the dispersive power of the material of the lens. Make appropriate assumptions.

A flint glass prism and a crown glass prism are to be combined in such a way that the deviation of the mean ray is zero. The refractive index of flint and crown glasses for the mean ray are 1.620 and 1.518 respectively. If the refracting angle of the flint prism is 6.0^@ , what would be the refracting angle of the crown prism ?

The refractive index of glass is 1.5. Find the speed of light in glass.

The dispersive powers of crown and flint glasses are 0.03 and 0.05 respectively, The refractive indices for yellow light for these glasses are 1.517 and 1.621 respectively. It is desired to from an achromatic combination of prisms of crown and flint glasses which can produce a deviation of 1^@ in the yellow ray. Find the refracting angles of the two prisms needed.

Find the dispersive power of flint glass if the refractive indices of flint for red, green and violet light are 1.613, 1.620 and 1.632 respectively.

Three thin prisms are combined as shown in figure. The refractive indices of the crown glass for red, yellow and violet rays are mu_r, mu_y and mu_v respectively and those for the flint glass are mu_r^', mu_y^' and mu_v^' respectively. Find the ratio A'/A for which (a) there is no net angular dispersion, and (b) there is no net deviation in the yellow ray.

White light is incident on one of the refracting surfaces of a prism of angle 50^(@) . If the refractive indices for red and blue colours are 1.641 and 1.659 respectively. The angular separation between these two colours when they emerge out of the prism is