Question # 1

If the stream lines of fluid are forced closer together then.

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Speed of the fluid increases

Speed of the fluid decreases

Pressure of the fluid increases

Speed of the fluid remain same

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

Dot product of vector with itself is.

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Zero

2 A

A²

A

3 Joules of work id done is 3 seconds, then power

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6 Watt

1 Watt

3 Watt

2 Watt

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

The diameter of a lens is called

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Focal length

Aperture

Principle axis

Centre

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

The efficiency of heat engine whose sink is at 17 ^oC and source at 200 ^oC is.

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38%

63%

80%

90%

When distance is plotted against the force, it is taken along

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x-axis

y-axis

z-axis

None of these

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

The instrument which detects the instant as which the external pressure becomes equal to the systolic pressure is called.

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Manometer

Sphygmomanometer

Barometer

Stethoscope

A body of mass 2 kg moving with velocity of 4 ms-1 has K.E. equal to.

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16 J

8 J

32 J

2 J

If amplitude of a simple pendulum is increased by 4 times the time period will be.

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Four times

Half

Same

Two times

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Physics Fsc Part 1 Online Test MCQs With Answers

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