Question # 1

The path (or trajectory) described by a projectile is

Choose an answer

a parabola

a hyperbola

a circle

a straight line

According to the de-Brogile relation, an object of large mass and ordinary speed has

Choose an answer

very small wavelength

very large wavelength

very small frequency

all of these

In a transistor, if the central region is n-type, then this type of transistor is known as

Choose an answer

n-p-n transistor

p-n-p transistor

either of these

none of these

The SI unit of magnetic induction is tesla which is equal to

Choose an answer

Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Choose an answer

a reversible process

an irreversible process

any one of them

both of them

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Choose an answer

Push against the air

React against the rocket and push it up

Heat up the air which lifts the rocket

Push against the earth

One KWh is equal to:

Choose an answer

3.6 x 10²J

3.6 KJ

3.6 x 10¹KJ

3.6 MJ

Force is a:

Choose an answer

Scalar quantity

Base quantity

Derived quantity

None of these

Neutrons are

Choose an answer

positive charge

negatively charged

massless

neutral

The term drift velocity is used when the ends of a wire are:

Choose an answer

Connected to a laser source

Connected to a voltage source

Not connected to a voltage source

At different values of potential

Both (B) and (D)

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Choose an answer

Elevator is stationary

Elevator cable breaks and it falls freely towards earth

Elevator accelerates downwards

Elevator accelerates upward

The current through a metallic conductor is due to the motion of

Choose an answer

protons

neutrons

electrons

free electrons

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

The velocity of falling raindrops attains limited value because of

Choose an answer

Up thrust of air

Air currents of the earth atmosphere

Surface tension effect

Viscous force exerted by air

The SI unit of magnetic induction is

Choose an answer

Gauses

Tesla

Weber

Weber²

Velocity of sound in vacuum (in m/s) is

Choose an answer

330

1000

156

0

In free space, the speed of electromagnetic waves is

Choose an answer

3 x 10⁸ms^-1

3 x 10⁶ms^-1

4 x 10⁷ms^-1

3 x 10⁹ms^-1

Radioactivity was discovered by:

Choose an answer

Becquerel

Marie curie

Pierre curie

All of them

None of these

In describing functions of digital systems, a closed switch will be shown as

Choose an answer

0

1

low

any one of these

The consumption source if energy is:

Choose an answer

Energy from blomass

Hydroelectric energy

Geothermal energy

None of these

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Choose an answer

100 m/sec

140 m/sec

1960 m/sec

196 m/sec

The RMS value of alternating current is:

Choose an answer

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

When the different streamlines cannot cross each other, then this condition is known as

Choose an answer

continuity condition

turbulent flow condition

steady flow condition

none of them

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

Choose an answer

negative charges

positive charges

protons

electrons

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

Choose an answer

Direct current

Magnetic current

Alternating current

Induced current

None of these

The transition from solid state to liquid state is:

Choose an answer

Abrupt

Slow

Continous

Discontinous

Both (A) and (D)

The total energy of spring mass system is

Choose an answer

zero

changing with time

constant

none of them

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

The magnitude of the force producing an acceleration of 10 m/sec²in a body of mass 500 grams is:

Choose an answer

3 N

4 N

5 N

6 N

The special theory of relatively treats the problems involving:

Choose an answer

Inertial frames of reference

Non-inertial frames

Non-accelerated frame

Botha (A) and (C)

Both (B) and (C)

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Choose an answer

Circular and endless

Oval in shape and endless

Straight

Parabolic

All are true

More Classes

Other Links

ECAT 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