Question # 1

Aerodynamics is a branch of

Choose an answer

Hydrodynamics

Thermodynamics

Both of them

Statics

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

Magnetic effect at a point caused due to flow a current depend upon the

Choose an answer

Quantity of current

Distance from current

Both the quantity of current and distance from current element

None of the all

The energy of photon 'E' is proported to

Choose an answer

The magnetic field H

The electric field E

Both the electric and magnetic field H and E

Frequency

Static electricity is produced by the transfer of:

Choose an answer

Electrons

Protons

One fluid

Two fluids

None of these

The body oscillates due to _____ accelerates and overshoots the rest position due to______,:

Choose an answer

Applied force, inertial

Restoring force, friction

Frictional force, inertial

Restoring force, inertial

The modulus of elasticity can be written as

Choose an answer

stress x strain

strain/stress

1/2 x stress x strain

stress/strain

The SI unit of magnetic induction is

Choose an answer

Gauses

Tesla

Weber

Weber²

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Choose an answer

10 NS

100 NS

140 NS

200 NS

The entity which measures the quantity of motion in a body is called

Choose an answer

force

energy

momentum

power

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Choose an answer

Sensitive

Accurate

Stable

None of these

Which one of the following can act approximately as a source of monochromatic light;

Choose an answer

Neon lamp

Fluorescent tube

Sodium lamp

None of these

The distance covered by the wave in one second is:

Choose an answer

Wave number

Wave length

Frequency

Wave speed

The r.m.s value of a.c. current is always

Choose an answer

positive

negative

zero

all of these

Which instrument is expensive and difficult to use?

Choose an answer

Voltmeter

Potentiometer

CRO

Both A and C

Both A and B

For the working of a heat engine, there must be

Choose an answer

a source of heat at high temperature

a sink at low temperature

both of them

none of them

Nucleus of a hydrogen atom may contain:

Choose an answer

One neutron only

Two protons and one neutron

Two protons and two neutrons

Aany of above

One proton only

When a shall explodes a mid-air, the total momentum of its fragments is

Choose an answer

less than the momentum of shell

equal to the momentum of shell

greater than the momentum of shell

none of them

The expression of Hook's law is

Choose an answer

F=ma

F=kx

F= -kx

-kx=ma

Work done is independent of path followed in _______

Choose an answer

Gravitational field

Magnetic field

Electric field

All of these

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

Choose an answer

9 x 10⁵V

9 V

8 x 10⁶V

80 V

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Choose an answer

Force

Energy

work

impulse

Crests and troughs are formed in:

Choose an answer

Longitudinal waves

Transverse waves

Both of these

None of these

In the study of thermodynamics, which gas is considered as the working substance

Choose an answer

real gas

ideal gas

any gas may be ideal or real

none of them

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Choose an answer

parabola

straight line

hyper bola

ellipse

A spring of constant k = 0.4 N m^-1is to be extended through 10 cm at a place where g = 10 m sec^-2. The mass to be suspended should be:

Choose an answer

4 gms

0.4 gm

40 gms

None of these

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Choose an answer

Increase the mass of water flowing per second

Avoid wastage of water

Increase the velocity of water flowing out

Increase the volume of water flowing per second

While describing the motion of a simple pendulum, the frictional effects are

Choose an answer

taken into account

completely ignored

partially ignored

none of them

Work is product of:

Choose an answer

Force and velocity

Heat and energy

Force and displacement

None of these

If the length of second pendulum becomes four times then its time period will become

Choose an answer

Four time

Two times

Six times

Eight times

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

Choose an answer

40 km/h

48 km/h

50 km/h

60 km/h

More Classes

Other Links

ECAT Pre General Science Physics 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