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प्रश्न
A wave has wavelength 50Å of State its one use.
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उत्तर
X-rays are used to study atomic arrangement in crystals as well as complex molecules.
संबंधित प्रश्न
State the cause of dispersion of white light
Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
The seven colours in the spectrum of sunlight in order, are represented as :
Refer to fig
(i) Name the lens L.
(ii) What are the points O, O' called?
(iii) Complete the diagram to form the image of the object AB.
(iv) Write three characteristics of the image.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Distinguish between an impure spectrum and a pure spectrum.
What is Newton’s disc?
The periscope is an optical device with a polished surface that reflects the light falling on it.
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
