Question # 1

Moon is ____ satellite.

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Natural

Communications

Artificial

Geostationary

The orbital velocity of a satellite revolving at height 'h' above the surface of Earth is given by

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The Mars has value of g

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25.94 m/sec2

3.73 m/sec2

1.62 m/sec2

8.87 m/sec2

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

A force of 10 N is making and angle of 30^owith the horizontal. Its horizontal component will bw:

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4 N

5 N

7 N

8.7 N

The upper reference point in thermometer is used to check:

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Melting point

Freezing point

Boiling point

Streaming point

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

________ is used to measure the force or weight of a body :

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Physical balance

Spring balance

A and B both

None

The radiation from sun is:

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Alpha

Gamma

Radio

Ultraviolet

_______________ was a pupil of Galileo.

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Einstein

Robert

Al Razi

Torricelli

The value of g at a height one Earth's radius above the surface of the earth is:

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2g

1/2 g

1/3 g

1/4 g

Einstein's mass-energy equation relation is:

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E =1/2 mc²

E =mc²

E =m²c

E = 2 mc²

If Fx and Fy are rectangular components of vector F, then its direction is determined by the relation

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θ = sin-1 Fv/Fx

θ = tan-1 Fx/Fy

θ = tan Fx/Fy

θ = tan Fy/Fx

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