MDCAT Physics Chapter 7 Light Online Test

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MDCAT Physics Chapter 7 Light Online Test

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

In Michelsion's interferometer the path difference is varied by moving

Question # 2

As the object is brought from a far off point to he focus, the magnification goes on

Question # 3

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

Question # 4

The danger signals are red while the eye is more sensitive to yellow because

Question # 5

At points where the crest (or trough) of one wave coincides with the crest (or trough) of the other wave, the wave produces

Question # 6

For the monochromatic beam of X-rays, the crystal planes in a lattice act like a

Question # 7

In multimode graded index fibre core and cladding has boundary

Question # 8

A spectrometer is used to find

Question # 9

While viewing a distant object with a telescope suddenly a housefly sits on objective lens.The correct statement is that

Question # 10

A fiber of 50μm diameter capable of carrying white light at ______ distances is called ______ index fiber

Question # 11

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

Question # 12

In case of reflection of ray within a denser medium, angle of incidnet is ______ -angle of reflection

Question # 13

A monochromatic source of light gives light of

Question # 14

The refracting edge of the prism must be parallel to the axis of rotation of the telescope, so that the turn table is leveled using

Question # 15

If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are

Question # 16

The bending of light when it passes from one medium to another is known as

Question # 17

An object is placed at a distance of 200 cm from a convex lens of focal length 10 cm the linear magnification is

Question # 18

The astronomical telescope consists of objective and eye piece.The focal length of he objective is

Question # 19

Two sources are said to be coherent if they have:

Question # 20

Measurement of a standard metre in terms of the wavelength of red cadmium light is

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