Question # 1

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

Change in momentum is one second called.

Choose an answer

Impulse

Force

Energy

Work

A simple pendulum consists of a

Choose an answer

small light bob

small heavy bob

big light bob

big heavy bob

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Choose an answer

Greater than the speed at which they pass from left to right

Less than the speed at which they pass from left to right

The same speed at which they pass from left to right

Any of above

None of them

The efficiency of petrol engine is usually not more than 25% to 30% because of

Choose an answer

friction

heat losses

both of them

none of them

The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:

Choose an answer

One coulomb

0.5 coulomb

30 coulomb

2 coulombs

None of these

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

Tick the conservation force:

Choose an answer

Tension in a string

Air resistance string

Elastic spring force

Frictional force

In the text book, the transistor amplifier circuit is a:

Choose an answer

Common emitter circuit

Common collector circuit

Common base circuit

Any of these

None of these

A heavily damped system has a fairly

Choose an answer

sharp resonance curve

flat resonance curve

both of them

none of them

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

Choose an answer

2.9 s

3.0 s

6.6 s

9.6 s

The path (or trajectory) described by a projectile is

Choose an answer

a parabola

a hyperbola

a circle

a straight line

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

Choose an answer

magnetic

magnetic dipole

magnetic monopole

none of them

In a metal, the valence electrons are:

Choose an answer

Attach to individual atoms

Not attached to individual atoms

Free to move within the metal

Both (A) and (C)

Both (B) and (C)

When an oscillatory motion repeats itself, then this type of motion is called

Choose an answer

vibratory motion

constant motion

fixed motion

periodic motion

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

How much force is required to slide one layer of the liquid over the other layer is measured by

Choose an answer

friction

density

viscosity

resistivity

The special theory of relativity is based on:

Choose an answer

Four postulates

Three postulates

Two postulates

One postulate

None of these

(CRO) Cathode ray oscilloscope is a device used for high speed

Choose an answer

velocity

graph plotting

time-velocity

none of these

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Choose an answer

100 K

273 K

0 K

-273 K

Force is a:

Choose an answer

Scalar quantity

Base quantity

Derived quantity

None of these

Rate of diffusion is

Choose an answer

Faster in solids than in liquids and gases

Faster in liquids than in solids and gases

Equal to solids, liquids and gases

Faster in gases than in liquids and solids

In radio-active decay, the original element which disintegrate to another element is called

Choose an answer

element

daughter element

parent element

none of these

We can express the work in term of

Choose an answer

directly measurable variables

indirectly measurable variables

either of them

both of them

In a heat engine, heat is supplied by the

Choose an answer

cold reservoir

sink

hot reservoir

none of them

The most common source of alternating voltage is:

Choose an answer

Motor

Transformer

AC genrator

Both (A) and (C)

Both (A) and (B)

Binding energy per nucleus is

Choose an answer

greater for heavy nucleus

least for heavy nucleus

greatest for light nuclei

decreases for medium weight niclei

In the forward biases situation, the current flowing across the p-n junction is a few:

Choose an answer

amperes

Milli amperes

Micro amperes

Pico amperes

None of these

The velocity of sound in air depends upon

Choose an answer

Density and elasticity of gas

Pressure

Wavelength

Amplitude and frequency of sound

The quantity having the same unit as that of emf is:

Choose an answer

Force

Energy

Potential

Current

Charge

The Phenomenon of generation of induced emf is called

Choose an answer

Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both A and B

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