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प्रश्न
A ray of light passes from water to air. How does the speed of light change?
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उत्तर
When light passes from water to air i.e., from denser to rarer its speed increases.
संबंधित प्रश्न
How does the angle of minimum deviation produces by a prism change with increase in :
the wavelength of incident light
Comment on the statement ‘The refractive index of glass is 3/2.’
In what condition a prism is said to be in the position of minimum deviation? What is the direction of the refracted ray inside the prism in this condition?
A ray of monochromatic light is incident from air into a glass slab. Draw a labelled ray diagram indicating the change in its path till it emerges out of the slab. In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
Show with the help of a ray diagram the path of the ray when incident ray normally falls on the first surface of the glass block and passes through the block and the liquid.
Write the approximate values of speed of light in (i) air and (ii) glass. Use these values to calculate the refractive index of glass with respect to air.
