Advertisements
Advertisements
Question
When a white light ray falls on a prism, the ray at its first surface suffers ______.
Options
No refraction
Only dispersion
Only deviation
Both deviation and dispersion
Advertisements
Solution
When a white light ray falls on a prism, the ray at its first surface suffers both deviation and dispersion.
APPEARS IN
RELATED QUESTIONS
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
In the formation of spectrum of white light by a prism:
which colour is deviated least?
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
What will happen if another similar glass prism is placed upside down behind the first prism?
Write three conditions necessary to obtain a pure spectrum on a screen. Name the instrument in which the conditions stated by you are fulfilled.
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
The angle of deviation through a prism is minimum when
- Incident rays and emergent rays are symmetric to the prism.
- The refracted ray inside the prism becomes parallel to its base.
- The angle of incidence is equal to that of the angle of emergence.
- When the angle of emergence has doubled the angle of incidence.
Choose the correct answer from the options given below:
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 angle 4°:
State the colour which bends:
- The most.
- The least while passing through a glass prism.
