Question # 1

When water falls from tap, its cross sectional area decrease due to.

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Decrease of speed

Increase of speed

Air pressure

Gravity increase

The speed of stars and galaxies can be calculated by

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Compton effect

Stefan's law

Doppler's effect

Pascal's law

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

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x-axis

y-axis

z-axis

None of these

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

The lower reading of blood pressure is called.

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Systolic pressure

Diastolic pressure

Normal pressure

Non normal pressure

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

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

A fog droplets are in freely falling condition,. the ratio of their radii is 2:3, the ratio of their terminal velocities will be.

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2:3

4:6

4:9

9:4

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

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40%

60%

25%

50%

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

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Physics Fsc Part 1 Online Test MCQs With Answers

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