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Published on: 28/08/2019
Wave Optics
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Questions + Answers key
Take MCQ Physics Test
1.
For double refracting crystal the refractive indices , for the ordinary and extraordinary denoted by µo and µe. What is the relation valid along the optical axis of the crystal.
2.
What is range of vision?
3.
What is the meant by accommodation of the eye?
4.
Which is not true for the image formed in a plane mirror? The image is
virtual
erect
laterally inverted
closer to the mirror than the object
5.
In a concave mirror, an object is placed at a distance \({ d }_{ 1 }\) from the focus and the real image is formed at a distance \({ d }_{ 2 }\) from the focus. then the focal length of the mirror is:
\(\sqrt { { d }_{ 1 }{ d }_{ 2 } } \)
\({ d }_{ 1 }{ d }_{ 2 }\)
\({ { (d }_{ 1 }{ /d }_{ 2 }) }^{ /2 }\)
\(\sqrt { { d }_{ 1 }{ /d }_{ 2 } } \)
6.
The ratio of the speed of an object to the speed of its real image of magnification m in the case of a convex mirror is
\(-\frac { 1 }{ { m }^{ 2 } } \)
\({ m }^{ 2 }\)
-xm
\(\frac { 1 }{ { m } } \)
7.
In a young's double slit experiment, the source is white light. One of the holes is covered by a red filter and another by a blue filter. In this case
There shall be alternate interference pattern of red and blue
There shall be alternate interference pattern of red distinct from that for blue
There shall be no interference fringes
There shall be alternate interference pattern of red mixing with one for blue
8.
Consider sunlight incident on a slit of width \({ 10 }^{ 4 }\)A. The image seen through the slit shall darkness as observed through the polaroid
Be a fine sharp slit white in colour at the centre
A bright slit white at the centre diffusing to zero intensities at the edges
A bright slit white at the centre diffusing to regions of different colours
only be a diffused slit white in colour
1.
\({ \mu }_{ 0 }={ \mu }_{ e }\)
2.
Range of the vision is the distance between near point and far point of eye.
3.
It is the ability of the eye to observe distinctly the objects situated at widely different distance from the eye.
4.
(d)
closer to the mirror than the object
5.
(a)
\(\sqrt { { d }_{ 1 }{ d }_{ 2 } } \)
6.
(a)
\(-\frac { 1 }{ { m }^{ 2 } } \)
7.
(c)
There shall be no interference fringes
8.
(a)
Be a fine sharp slit white in colour at the centre
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