Question # 1

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

The displacement coincides with the path of the motion when a body moves is a

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curved line

straight line

may be curved or straight

none of them

The density of blood is nearly equal to that of

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mercury

sodium

water

honey

The neighbours of every molecule in crystalline solids are arranged in

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an irregular manner

a regular manner

any manner

none of them

The SI unit of charge is

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Ampere

Watt

Coulomb

Volt

Joule

The number of LED'S needed to display all the digits is:

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Four

Five

Nine

Six

Seven

Compton derived an expression to find compton shift by applying to the process, the law of conservation of:

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Energy only

Momentum only

Mass only

Charge only

Both (A) and (B)

The effects of bends in a wire on its electrical resistance are:

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Zero

Much larger

Larger

Smaller

None of these

Chock consumes externally small

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Charge

Current

Power

Potential

The projectile attains maximum horizontal range when it is projected at an angle of

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30°

45°

60°

75°

A railway engine (mass 10⁴kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

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3,600 N

7,200 N

10,000 N

100,000 N

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

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Independent of h

Proportional to h^1/2

Proportional to h

Proportional to h²

The value of relative permittivity of different dielectrics are

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Equal

Different

Greater than one

Smaller than one

Both B and C

According to kinetic theory of gases, molecules of a gas behave like

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Inelastic spheres

Perfectly elastic rigid sphere

Perfectly elastic non-rigid spheres

Inelastic non-rigid spheres

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

In case of mechanical waves, we study the motion of

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a single particle

collection of particle

any one of them

none of them

Specific resistance of a wire depends upon

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Length

Cross-section area

Mass

None

The SI unit of strain is

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N

Dynes

Pascal

Dimensionless

The RMS value of alternating current is:

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0.7 times at the peak value

0.5 times the peak value

0.7 times the Instantaneous value

Equal to maximum voltage

None of these

Electrolysis is the study of conduction of electricity through:

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Solids

Liquids

Gases

Plasma

The half lie of radium-226 is

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238 years

4.5 x 10⁹days

1620 years

332 years

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

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V/e

eV

e/V

V

The potential difference across each resistance in series combination is

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same

different

zero

none of these

The conventional current is the name given to current due to flow of

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Positrons

Positive charges

Negative charges

Both A and C

None of these

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

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parallel to the field

Perpendicular to the field

At an angle of 45 to the field

None of the above

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

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8

4

6

7

The amplifier which us used to perform mathematical operations electronically is known as

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calculator

OP-AMP

computer

any one of them

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

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Cylinder

Box

Sphere

Circle

Rectangle

Truth table of logic function:

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Summarizes its output values

Tabulates all its input conditions only

Display all its input/output possibilites

Is not based on logic algebra

None of these

Rate of change of momentum is called

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Impulse

Force

Torque

Momentum

A certain force gives an acceleration of 2 m/sec²to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

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0.5 m/sec²

5 m/sec²

1.5 m/sec²

9.8 m/sec²

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