Question # 1

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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Thumb

Curled fingers

Middle finger

Arm of right hand

None of these

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

In case of streamed lined flow of liquid, the loss of energy is

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Maximum

Minimum

Infinite

equal to what is in turbulent flow

The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called

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diamagnetic substances

ferromagnetic substances

paramagnetic substances

all of them

Blomass includes:

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Crop residue

Natural vegetation

Animal dung

All of these

If A represents linear momentum and c, the velocity of light, then unit of pc in international system of units is:

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Newton

Joule

Joule-Sec

Joule-s^-1

Watt

1 gm-cm^-3is equal to

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10³kg-m^-3

10^-3kg-m^-3

1kg-m^-3

10⁶kg-m^-1

Parallel vectors of same magnitudes:

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Are equal

Are unequal

When added give the some equal to zero

Give the answer equal to zero

When two objects are rubbed together, their internal energy

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remains same

decreases

remains the same then decreases

increases

If a 40 watt light bulb burns for 2 hours. how much heat is generated

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288 x 10³J

288 x 10⁸J

288 x 10⁵J

288 x 10⁶J

F = I(L x B) is a

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vector

scalar

unit vector

none of these

The square of 0.4 is:

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Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

Mechanical waves on the surface of a liquid are

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Transverse

Longitudinal

Torsional

both transverse and longitudinal

The mechanics, which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanic

Quantum mechanics

Statics

Galvanometer is a device used for the detection of

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voltage

current

temperature

pressure

The term Brownian movement refers to

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irregular motions of small particles suspended in a fluid

convection currents in a liquid or gas

convection currents in a gas but not in a liquid

the stretching of a body beyond its elastic limit

The rate of decay of a radioactive substance

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decrease exponentially with time

decreases linearly with time

increases linearly with time

increases exponentially with time

The absolute temperature of the tripple point of water is

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100°C

4°C

373 K

273.16 K

Surface tension of water is due to

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Inter molecular attractions

Inter molecular spaces

Inter molecular repulsion

None of above

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

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uniform deceleration

uniform negative acceleration

average acceleration

uniform positive acceleration

If the volume of the gas is to be increased by 4 times, then

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Temperature and pressure must be doubled

At constant P the temperature must be increased by 4 times

At constant T the pressure must be increased by four times

It cannot be increased

Such an inductor coil which does not consume energy and is often employed for controlling a.c. without consumption of energy is called

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Choke

impedance

Semi-conductor

None

The velocity of a body at any instant of its motion is known as

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average velocity

instantaneous velocity

uniform velocity

none of them

The law of conservation of mass gives us the

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equation of continuity

Bernoulli's theorem

both of them

none of them

By CAT scans, we can detect the density difference of the order of:

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1%

20%

30%

50%

70%

Graphs which are used to illustrate the variation of velocity of an object with time are called

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distance time graphs

speed time graphs

velocity time graphs

acceleration time graphs

During the nuclear changes, the law/s of conservation that hold/s are that of:

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Charge

energy

Momentum

Mass

All of these

The ratio of shearing stress/shearing strain is called as

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Modulus

Pascal modulus

Hooker's modulus

Shear modulus

Magnetic effect of current is used:

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In electric motor

To detect current

To measure current

All of these

None of these

Huygen's principles states that:

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Light travels in straigth line

Light has dual nature

Either of these

None of these

The reactance of a coil when used in the domestic A.C. power supply (220 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly

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2.2 henry

1.6 henry

0.22 henry

0.16 henry

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