Advertisements
Advertisements
प्रश्न
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
Advertisements
उत्तर
Depth of the tank remains the same when viewed normally from above.
संबंधित प्रश्न
Explain how the formation of a rainbow occurs.
Write a relationship between the angle of incidence and angle of refractions for a given pair of media
Draw diagrams to show the refraction of light from glass to air. In diagram, label the incident ray, refracted ray, the angle of incidence (i) and the angle of refraction (r).
When light travels from a rarer to a denser medium, its speed ______.
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)`
Define the term refractive index of a medium. What do you understand by the statement 'the refractive index of glass is 1.5 for white light'?
A ray of light passes from air to water. In fig. 39, which of the ray A, B, C and D is the correct refracted ray?
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
What is the angular, deviation of the emergent ray from the glass block with respect to the incident ray?
Trace a ray of light incident at 30° on a surface if travelling from air to glass. What is the angle of refraction in this case? (R.I. for glass = 3/2).
Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.
