Question # 1

A₁b₁= A₂b₂represents

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Stock's law

Newton's law

Equation of continuity

Brenoulli's equation

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

Sodium chloride in a flame gives

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Green light

White light

Red light

Yellow light

Newton's laws of motion were published in

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1587

1687

1787

1887

How many orbiting satellites from the Global positing system.

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3

12

24

22

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

The dimensions of work are

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MLT^-1

MLT^-2

ML²T^-2

ML^-1T^-1

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

A set of frequencies which are multiples of the fundamental frequency are called.

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

The unit of co efficient of viscosity in S.I system

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Kg -1 ms-1

Kg m-1 s-1

kg -1 m-1

Kg ms-1

Blood has density equal to that of

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Mercury

Sodium

Honey

Water

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

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