Advertisements
Advertisements
рдкреНрд░рд╢реНрди
A Water pond appears to be 2.7 m deep. If the refractive index of water is 4/3, find the actual depth of the pond.
Advertisements
рдЙрддреНрддрд░
Apparent depth = 2.7 m
`µw=4/3`
Real depth = apparent depth × ЁЭЫНw
`=2.7xx4/3=3.6 m`
рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНрди
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
Write the relation between the angle of incidence and the angle of refraction for a medium.
For which colour of white light, is the refractive index of a transparent medium the most?
A ray of light enters a glass slab ABDC as shown in figure and strikes at the centre O of the circular part AC of the slab. The critical angle of glass is 42°. Complete the path of the ray till it emerges out from the slab. Mark the angles in the diagram wherever necessary.

While performing the experiment on tracing the path of a ray of light through a rectangular glass slab, in which of the following experimental set-ups is a student likely to get best results? P1 and P2 are the positions of pins fixed by him.
(A) I
(B) II
(C) III
(D) IV
How does the deviation produced by a prism depend on the wavelength of incident light?
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
A fish swimming in a pond seems nearer than it really is. Explain.
