Question # 1

The substances which break just after the elastic limit is reached, are known as

Choose an answer

brittle substances

ductile substances

plastic substances

elastic substances

Which one of the following is the unit of electric field intensity

Choose an answer

JC^-1

Vm^-1

Cm^-1

CJ^-1

To see the minor details of the object by microscope, it should have:

Choose an answer

High magnifying power

High resolving power

Am objective of larger focal length

None of these

One newton is a force that produces an acceleration of 0.5 m/sec²in a body of mass:

Choose an answer

2 Kg

3 Kg

4 Kg

8 Kg

The velocity of a projectile is maximum

Choose an answer

at the point of projection

just before striking the ground

at none of them

at both of them

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Choose an answer

reversible process

irreversible process

any one of them

none of them

The distance from eye to near point is taken as:

Choose an answer

10 cm

15 cm

20 cm

25 cm

The combined effect of resistance and reactance in a.c. circuit is called

Choose an answer

conductance

resistance

impedance

choke

The speed of sound in a medium depends on

Choose an answer

The elastic property but not on the inertia property

The inertia property but not on the elastic property

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

The current produced by moving a loop of wire across a magnetic field is called

Choose an answer

Direct current

Magnetic current

Alternating current

Induced current

None of these

The path (or trajectory) described by a projectile is

Choose an answer

a parabola

a hyperbola

a circle

a straight line

Electron is a particle whose mass is:

Choose an answer

Greater than that of a proton

Smaller than of a proton and greater than mass of neutron

Smaller than that of proton or neutron

Greater than that of an atom

The SI unit of spring constant is identical with that of:

Choose an answer

Force

Surface tension

Pressure

Loudness

A potential barrier of 0.7 V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

The electrons occupying the conduction band are known as

Choose an answer

conduction electrons

free electrons

both of them

none of them

A non-inertial frame of reference is that frame of reference in which

Choose an answer

a = 0

a > 0 or a < 0

v = 0

none of them

OP-AMP has the following input terminals

Choose an answer

one

two

three

four

The missing mass which is converted to energy in the formation of nucleus, is called

Choose an answer

packing fraction

mass defect

binding energy

none of these

transverse wave motion is possible in:

Choose an answer

Air

A mixture of NH₃and O₂

Strings

All of these

When a wave is travels from one place to another, it transfers:

Choose an answer

Matter

Energy

Momentum

Both B and C

The spectrum emitted from hydrogen filled discharge tube is:

Choose an answer

Line spectrum

Discrete spectrum

And spectrum

Absorption spectrum

Both (A) and (B)

When heat is added into the system then change in entropy is

Choose an answer

negative

positive

zero

any one of them

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Choose an answer

adiabatically

isothermally

isochorcally

isobarically

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

Choose an answer

3,600 N

7,200 N

10,000 N

100,000 N

The unit of decay constant is

Choose an answer

sex

sec²

sec^-1

sec^-2

If a given spring of spring constant k is cut into two indentical segments, the spring constant of each segment is:

Choose an answer

k/2

2 k

4 k

None of these

Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:

Choose an answer

Also 20º

70º

90º

180º

None of these

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Choose an answer

Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

The work done by a force keeping an object in circular motion with constant speed is:

Choose an answer

Zero J.

0.1 J

1 J

0.01 J

An aircraft is moving with a velocity of 300 ms^-1. If all the forces acting on it are balanced, then

Choose an answer

It still moves with the same velocity

It will be just floating at the same point in space

It will be fall down instantaneously

It will lose its velocity gradually

Whenever a covalent bond is broken in an intrinsic semi-conductor

Choose an answer

hole is created

an electron is created

an electron-hole pair is generated

all of them

More Classes

Other Links

Physics ECAT Pre Engineering Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer