Question # 1

The magnitude of A will be

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Zero

A²

1

A

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

Time taken by light to reach from moon to earth is

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1 min 20 sec

8 min 20 sec

3 min 20 sec

2 min 20 sec

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

The SI units of solid angle is

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Streadian

Radian

Degree

None of these

A system does 600 J of work and at the same time has its internal energy increased by 320 J. How much heat has been supplied.

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28o J

920 J

600 J

200 J

No spark plug is needed in the

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Petrol engine

Diesel engine

Gas engine

Water engine

In an object is placed in between focus point and Opticla center of a convex lens, the image formed by lens is.

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Real inverted

Virtual diminshed

Virtual inverted

Virtual erected

Value of triple point of water is given as.

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Zero K

100 K

273.16 K

373.16 K

Which one of the followign scientistis made some conributions to geometrical optics

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Plato

Archimedes

Euclid

None of these

Which remains constant in an adiabatic process.

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Volume

Pressure

entropy

temperature

If a body is moving in the counter clockwise direction the direction of angular velocity will be

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Toward the centre

Away from the centre

along the linear velocity

Perpendicular to both radius and linear velocity

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

The branch of Physics wich deals with velocities approaches the velocity of light is called

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Quantum Physics

Relati vistics Mechanics

Wave Mechanics

None of these

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

A collision in which K.E. of the system is not conserved is

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Elastic collision

Inelastic collision

3rd low of motion

None of these

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The magnifying power is also called

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Resolving power

Angular magnification

Strength of eye

None of these

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

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40%

60%

25%

50%

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

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