Question # 1

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

Let A = Area of cross section of pipe, v = speed of fluid, then 'Av' is called.

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Volume flow rate

Energy flow rate

Mass flow rate

Pressure flow rate

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

When a vector is multiplied by a (-)ve number its direction

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Remains constant

Reversed

Change by 90°

None of these

A man of mass 5 kg is falling freely, the fore acting on it will be

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5 N

9.8 N

19.6 N

49 N

The wave form of SHM is.

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Sine wave

Cosine wave

Tangent wave

Square wave

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

No body begins to move or comes to rest of itself was given by

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Newton

Pascal

Bernoulli

Bu Ali Sina

A force of 20 N acts along x axis, tis component is.

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0 N

10 N

20 N

30 N

The types of optical fibres are

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Three

Four

Five

Six

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

The work done will be maximum when angle between F and d.

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180^o

0^o

90^o

60^o

Hot igneous rocks, usually in molten or partly molten state are found in the depth of

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5 km

10 km

15 km

20 km

The law of conservation of mass gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

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Physics Fsc Part 1 Online Test MCQs With Answers

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