Question # 1

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

International Telecommunication satellite

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4,6,8 and 10 Hz

4,6,11 and 14 GHz

4,6,8 and 12 Hz

4,8,11 and 16 GHz

The K.E. of bullet of mass 500 gm moving at a speed of 200 ms-1

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250 J

125 J

2500 J

10,000 J

The Unit of thermodynamic temperature is.

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C^o

F^o

K

None of these

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The relation between linear and angular velocity is

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The Newton's formula for the speed of sound in air is

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In branch of physics which deals with the nuclear particls such as neurtons, protons adn nuclear structur is called

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Nuclear Physics

Solid state Physics

Particle Physics

Plasma physics

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

Dot product of vector with itself is.

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Zero

2 A

A²

A

Unit of acceleration is

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ms-1

ms

ms-2

m2s

The dot product of two vectors A and B will be zero, if angle between A and B is

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Zero

30^o

90^o

180^o

Energy dissipated usually appears as

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P.E.

Heat Energy

Chemical energy

Nuclear Energy

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

Second pendulum has a time period

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1 sec

3 sec

2 sec

4 sec

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

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Double

Half

Four times

Remains same

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

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