Question # 1

No spark plug is needed in the

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Petrol engine

Diesel engine

Gas engine

Water engine

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

The commercial unit of electric energy is

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Kilo watt hour

watt

Watt hour

Kilo Watt

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

Using a graded Index fibre, the time difference is reduced to about.

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1 ns per km

33 ns per 100 km

33 ns per km

1 ns per 100 km

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

The resultant of two vectors having magnitude 10 N and 8 N Can not be

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2 N

9 N

18 N

20 N

The space within which gravitational force acts on a body is called

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Electric field

Gravitational field

Magnetic field

Force field

The direction of angular velocity of along the

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Tangent at that point

Axis of rotation

Radius towards the centre

Radius away from the centre

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

When a particle is moving along a circular path its projection along the diameter executes

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Linear motion

Vibratory motion

Rotatory motion

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