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प्रश्न
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
विकल्प
`"sin w"/"sin z"`
`"sin x"/"sin w"`
`"sin u"/"sin v"`
`"sin u"/"sin x"`
`"sin w"/"sin x"`
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उत्तर
`"sin w"/"sin x"`
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संबंधित प्रश्न
Draw a ray diagram to show the refraction of light through a glass slab and mark angle of refraction and the lateral shift suffered by the ray of light while passing through the slab.
Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.
Write a relationship between the angle of incidence and angle of refractions for a given pair of media
A ray of light passes from water to air. How does the speed of light change?
Write the relation between the angle of incidence and the angle of refraction for a medium.
Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature the glass piece is not seen. When is the glass piece not seen?
Complete Fig. 4.32 to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.
The refractive index of glass is 1.5. From a point P inside a glass block, draw rays PA, PB and PC incident on the glass air surface at an angle of incidence 30°, 42° and 60° respectively.
- In the diagram show the approximate direction of these rays as they emerge out of the block.
- What is the angle of refraction for the ray PB?
`("Take" sin 42° =2/3)`
Draw a diagram to show the refraction of a monochromatic light ray through an equilateral prism. On the diagram, label the incident, refracted, and emergent rays. It also indicates the angle of deviation by the letter δ.
Complete the ray diagram showing its emergence into the air after passing through the prism.
