Advertisements
Advertisements
Question
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Advertisements
Solution
The spectrum is the colour band obtained on a screen when white light passes through a prism. The seven prominent colours obtained in the spectrum of white light, in order are Violet, Indigo, Blue, Green, Yellow, Orange, and Red.
RELATED QUESTIONS
In the following diagram, the path of a ray of light passing through a glass prism is shown:
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option):
(A) X, R and T
(B) Y, Q and T
(C) X, Q and P
(D) Y, Q and P
Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
State two properties of ultra-violet radiations which differ from visible light.
Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.
Observe the given figure and write appropriate phenomenon of light in the box.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
State the colour which bends:
- The most.
- The least while passing through a glass prism.
