Question # 1

The speed of sound is greater in solids due to their high.

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Density

Pressure

Temperature

Elasticity

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

Pressure of fluid will be low where speed of fluid is.

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Low

Zero

High

Constant

Errors due to incorrect design of a device are called

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Random Error

Systematic Error

Physical Error

None of these

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

Efficiency of steam locomotive is.

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8%

10%

9%

7%

The time period of an oscillating mass spring system is 10 second. If mass attached to spring id doubled then time period becomes.

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10 sec

20 sec

5 sec

None of these

The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes

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Half

Double

Unchanged

Zero

The word Fluid means

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To rise

To fall

To flow

To oppose

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

The periodic variations of sound between maximum and minimum loudness are called.

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Doppler's effect

reflection

Laplace correction

Beats

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

A layer of rock holding water that allows water to percolate through it with pressure is called.

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Geyeser

Aquifer

Stem vent

Hot spring

Michelson's interferometer can be used ot find the

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Velocity of light

Wavelength of light

Velocity of sound

Wavelength of sound

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

In the thermodynamics process , the equation W = -delta U represents.

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Isothermal expension

Isothermal compression

Adiabatic expansion

Adiabatic compression

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

Venturimeter is used ot measure.

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Speed of fluid

Pressure of fluid

Volume of fluid

Mass of fluid

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