Question # 1

The motion in a plane is the motion in

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one dimension

two dimension

three dimension

four dimension

Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:

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2 N

- 2 N

18 N

36 N

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluid

None of these

We can excite an atom by

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Bombardment of particles

Radiating photons

Providing potential difference

All answer are true

Examples of physical quantities are:

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Length

Color

Effect of music

All of these

A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:

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10 m/sec2

20 m/sec2

30 m/sec2

Zero

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

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Relativistic mechanics

Wave mechanics

Quantum

Statics mechanics

A digital system deals with quantities or variables which have

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only one state

only two discrete states

three discrete states

four discrete states

Which of the following is not mechanical wave?

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Sound wave

Light wave

wave produced in spring

None of them

The absolute temperature of the tripple point of water is

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100°C

4°C

373 K

273.16 K

Biomass includes:

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Crop residue

Natural vegetation

Animal dung

All of these

Truth of kinetic energy is confirmed by:

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Diffusion of gases

Brownian motion

Both A and B

None of these

While deriving the equation for pressure of a gas we consider the

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rotational motion of molecules

vibrational motion of molecules

linear motion of molecules

all of them

Rate of decay is actually described by.

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Half line

Decay constant

Mean life

Total life

None of these

Referring to above figure, current in coil P falls from its maximum value to zero

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At the instant the switch is closed

At the instant the switch is opened

When switch is kept open

When switch is kept closed

None of these

In reverse-biased p-n junction, the reverse current is due to flow of:

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Minority charge carriers

Majority charge carriers

Free electrons from p to n-region

Holes from n to p-region

all are true except (B)

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

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800^oC

500^oC

300^oC

100^oC

None of these

The branch of physics, which deals with the structure an properties of solids is called:

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Plasma physics

Solid state physics

Any of above

Astro physics

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

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A

2 A

3 A

4 A

Some charge is being given to a conductor. Then its potential

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Is maximum at surface

Is maximum at centre

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

Change in momentum is one second is called:

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Impulse

Force

Energy

Work

Substances that flow easily have

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large coefficient of viscosity

small coefficient of viscosity

either of them

none of them

According to Einstein, with the great increase in the speed of the body, the relativistic mass of the body

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Remains constant

Decreases

Increases to infinity

Reduced to zero

The special theory of relativity treats problems invoving

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inertial frame of references

accelerating frame of references

both of these

none of these

The valence band of an atom in a solid

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is always empty

may or may not be empty

can never be empty

none of them

Ohm's law states that

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The current through a resistor is directly proportional to the applied voltage

The voltage across a resistor is directly proportional to the current passing through it

Resistance is the constant of proportionality between the voltage and current

all of these

Aerodynamics is a branch of:

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Hydrodynamics

Thermodynamics

Both of them

Statics

Change in momentum is one second called.

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Impulse

Force

Energy

Work

Direction of motion ______ in circular motion:

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Changes off and on

Changes continuously

Does not change

None of them

There is present in paraffin a large amount of:

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Nitrogen

Hydrogen

Carbon

Baryllium

Lithium

A transistor has:

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One region

Two regions

Three regions

Four regions

None is correct

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