Question # 1

If F=0.04 N and X=4 cm then K=

Choose an answer

1 Nm^-1

2 Nm^-1

3 Nm^-1

4 Nm^-1

When body moves with increasing acceleration, its velocity time graph is a

Choose an answer

straight line

horizontal straight line

vertical straight line

curve

Sound waves in air always

Choose an answer

Longitudinal

Transverse

Stationary

Electromagnetic

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

Choose an answer

Unequal

Exactly equal

Roughly equal

Zero

The phase angle of a series RLC circuit at resonance is

Choose an answer

180°

90°

0°

None of the these

Most of the electrons in the base of an NPN transistor flow

Choose an answer

Out of the base lead

Into the collector

Into the emit

Into the base supply

Which of the following theory completely explain the three types of materials

Choose an answer

Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

The isotope/s of hydrogen is /are:

Choose an answer

Protium

Deuterium

Tritium

Both (A) and (B)

All of these

A body whose momentum is constant must have constant

Choose an answer

Acceleration

Velocity

Force

None of these

The internal energy of a system does not depend upon the

Choose an answer

initial state of the system

final state of the system

path

none of them

The value of escape velocity of Earth planet comes out to be:

Choose an answer

11 m/sec

11 km/sec

11 km/hour

11 cm/sec

Which of the following does not have the same units:

Choose an answer

Work

Heat

Kinetic energy

Power

The magnitude of induced emf depends upon the

Choose an answer

Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

An inertial frame of reference is that frame of reference in which

Choose an answer

a = 0

a > 0

a < 0

all of them

The pattern of NaCl particles have a shape which is :

Choose an answer

Cubic

Body centred cubic

Simple cubic

face centred

Both (A) and (C)

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Choose an answer

Longitudinal waves

Transverse waves

Water waves

Complex waves

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

Choose an answer

W=Kx_o

W=1/2Kx_o

W=1/2Kx²_o

W=4Kx_o

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Choose an answer

9.8 N

80 N

98 N

100 N

The rate of decay of radioactive substance

Choose an answer

is constant

decrease exponentially with time

varies inversely as time

decreases linearly with time

The obvious effect/s of current is/are:

Choose an answer

Heating effect

Magnetic effect

Chemical effect

Both (C) and (B)

All of these

The work is stored in the inductor as

Choose an answer

Electric potential energy

Elastic potential energy

Magnetic energy

Absolute potential energy

The direction of a vector in space requires:

Choose an answer

X-axis

X and Y-axes

XYZ axes

Y and Z-axes

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Choose an answer

increasing speed

decreasing speed

constant speed

none of them

The SI unit of magnetic permeability is

Choose an answer

WB A^-1m^-1

WB mA^-1

WB Am^-1

None of these

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Choose an answer

+5 x 10¹J

+5 x 10²J

+5 x 10³J

+5 x 10⁴J

In above figures, tell which set of graphs shows that a body is moving with uniform velocity:

Choose an answer

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

The process which is carried out at constant temperature is known as

Choose an answer

adiabatic process

isothermal process

isochoric process

none of them

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

Choose an answer

permanent

temporary

either of them

none of them

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Choose an answer

1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

Graph of Black body radiation is example of

Choose an answer

Band spectra

Continuo's spectra

Line spectra

All

When a platinum wire is heated, it appears dull red at about

Choose an answer

500°C

900°C

1100°C

1300°C

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