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Question
A wave has wavelength 50Å of State the speed in vacuum.
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Solution
The speed of the wave will be 3 × 108 m/s in vacuum.
RELATED QUESTIONS
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:
The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
In the following diagram the correctly marked angles are :
(a) ∠A and ∠e
(b) ∠i, ∠A and ∠D
(c) ∠A ∠r and ∠e
(b) ∠A ∠r and ∠D
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
The splitting up of white light into seven colours on passing through a glass prism is called ______.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Write the range of wavelength of the visible spectrum.
What is Newton’s disc?
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
