Question # 1

The value of solar constant.

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1.4 kW m-2

1.0 kW m-2

1.6 kW m-2

2 kw m-2

Identity the non conservative force among the following.

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Frictional force

Electrical force

Gravitational force

Elastic restoring force

The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

The frequency of 2nd pendulum is

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0.5 Hz

1 Hz

1.5 Hz

2 Hz

When the car moves with an increasing acceleration then its velocity time graph is always

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Constant

Variable

A straight line

A curve

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

The dimensional of potential energy per unit volume are same as that of.

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Work

Pressure

Speed

Density

A force of 10N makes an angle 30o with y axis. Then magnitude of x -component is.

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5 N

8.66 N

10 N

Zero

A force applied on a body produces acceleration in

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Opposite direction

perpendicular direction

Its own direction

In any direction

A finite volume of gas consists of

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Small no. of molecules

Large no. of molecule

Average no. of molecule

None of these

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

Sound travel faster in

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CO2

H2

O2

He

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Physics Fsc Part 1 Online Test MCQs With Answers

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