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Question
A wave has wavelength 50Å of State its one use.
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Solution
X-rays are used to study atomic arrangement in crystals as well as complex molecules.
RELATED QUESTIONS
In the formation of spectrum of white light by a prism:
- which colour is deviated least?
- which colour is deviated most?
In the formation of spectrum of white light by a prism:
which colour is deviated most?
What is a rainbow?
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
What conclusion do you draw about the nature of white light in part (b)?
The frequency range of visible light is from 3.75 × 1014 Hz to 7.5 × 1014 Hz. Calculate its wavelength range. Take speed of light = 3 × 108 m/s.
Distinguish between an impure spectrum and a pure spectrum.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
