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प्रश्न
The speed of light in air or vacuum is
पर्याय
3 × 108 M s-1
2.25 × 108 m s-1
332 ms-1
2.0 × 108 ms-1
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उत्तर
3 × 108 M s-1
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संबंधित प्रश्न
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green
Which is optically denser: water or air? Give reason
A wave has wavelength 50Å of State the speed in vacuum.
Write the range of wavelength of the ultraviolet spectrum.
The periscope is an optical device with a polished surface that reflects the light falling on it.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
