Home
Class 11
PHYSICS
Calculate angle of dispersion between re...

Calculate angle of dispersion between red and violet colours produced by a flint glass prism of refracting angle `60^@. Mu_v = 1.663 and mu_r = 1.622`.

Text Solution

Verified by Experts

The correct Answer is:
`4^@ 6'`
Here, `A = 60^@`. Therefore, we cannot use the formula : `delta_v - delta_r = (mu_v - mu_r) A`
Here, we find `delta_v` from `mu_v = (sin(A + delta_v)//2)/(sin A//2)`
Also, find `delta_r`, from `mu_r = (sin (A + delta_v)//2)/(sin A//2)`
Then, calculate, `(delta_v - delta_r) = 4^@ 6'`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(d)|35 Videos

  • RAY OPTICS

    PRADEEP|Exercise (Test Your Grip)Multiple Choice (b)|10 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(b)|66 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions|7 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise Assertion- Reason Type questions|20 Videos

Similar Questions

Explore conceptually related problems

What is the angle of dispersion between red and violet colours produced by a flint glass prism of refracting angle 60^(@) ? Refractive indices of the given prism for red and violet colours are 1.622 and 1.663, respectively.

Calculate the dispersive power for crown and flint glass prisms from the following data : For crown glass, m_b = 1.522 , m_r = 1.514 . For flint glass, mu'_b = 1.662 , mu'_r = 1.644 .

Knowledge Check

  • The angular dispersion produced by a prism of angle 5^@ is [mu_v = 1.665, mu_r = 1.645]

    A
    `2^(@)`
    B
    `1^(@)`
    C
    `0.2^(@)`
    D
    `0.1^(@)`

  • The dispersive powers of flint glass and crown glass are 0.053 and 0.034 respectively and their mean refractive indices are 1.68 and 1.53 for white light .Calculate the angle of the flint glass prism required to form an achromatic combination with a crown glass prism of refracting anlge 4^@ .

    A
    `2^@`
    B
    `4^@`
    C
    `5^@`
    D
    `6^@`

  • A crown glass prism of refracting angle 6^@ is to be used for deviation without dispersion with a flint glass of angle of prism alpha . Given : for crown glass mu_r=1.513 and mu_v = 1.523, for flint glass mu_r=1.645 and mu_v=1.665 . Find alpha

    A
    `3^@`
    B
    `4^@`
    C
    `4.5^@`
    D
    `5^@`

    • Similar Questions

    Explore conceptually related problems

    Calculate the dispersion and deviation ( mean) produced by a flint glass prism placed in the position of minimum deviation with respect to the mean colour. The angle of prism is 60^(@) . Also calculate the dispersive power of the prism. Index of refraction of flint glass for blue light=0.667 and that for the red light =1.643.

    In a direct vision spectroscope there are two flint glass prisms each of angle 5^(@) and dispersive power 0.36 and two crown glass prisms of dispersive power 0.24. Calculate the angle of each crown glass prism and the net dispersion produced by the system of prisms. (mu_("crown")=1.5 and mu_("flint")=1.68)

    Calculate the dispersive power for crown and flint glass prism from the following data :For crown glass, m_(b) = 1.522, m_(r ) = 1.514 . For flint glass, mu'_(b) = 1.662, mu'_(r ) = 1.644

    The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersive power of the prism material.

    The dispersion produced by an equilateral prism of flint- glass is 2.16^(@) and that produced by an equilateral prism of crown glass is 1.08^(@) . What should be the angle of a crown glass , which will produce an achromatic combination with a flint-glass prism of refracting angle 30^(@) ?

    Home
    Profile