Question # 1

Magnetic induction is also called as:

Choose an answer

Ampere’s law

Faraday’s law

Lenz’s law

Newton’s law

Coulomb’s law

The sum of two or more vectors is equal to a single vector which is called:

Choose an answer

Component vector

Resultant vector

Product vector

None of these

Teh consumption of energy by a 1000 watt heater in half an hour is:

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Choose an answer

kg

kg-meter

kg/meter

Meter/kg

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 motional e.m.f depends upon the

Choose an answer

Length of a conductor

Strength of a magnet

Speed of the conductor

All of the above

The principle of superposition states that

Choose an answer

The total displacement due to several waves is the sum of the displacement due to those waves acting individually

Two stationary waves superimpose to give two progressive waves

A diffraction pattern consists of many interference patterns superimposed on one another

Two progressive waves superimpose to give a stationary wave

The S.I unit of frequency is

Choose an answer

Vibrations s^-2

Ms^-1

Hertz

s^-1

The flux through a closed surface depends upon:

Choose an answer

Shape of geometry of the closed surface

Charge enclosed

Nature of the medium

Both (A) and (B)

Both (B) and (C)

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

Choose an answer

1 m

5 m

10 m

15 m

Fraction of the decaying atoms per unit time is called

Choose an answer

decay atom

decay element

decay constant

decay

The curie temperature of iron is about

Choose an answer

250°C

500°C

750°C

1000°C

The fluid which is incompressible and non viscous is called

Choose an answer

Ideal fluid

Non-ideal fluid

Prefect fluid

All

Magnetic lines of force:

Choose an answer

Cannot intersect at all

Intersect at infinity

Intersect within magnet

Intersect at Neutral Point

None of these

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

Choose an answer

64 W

80 W

100 W

125 W

When force and displacement are perpendicular to each other than work is equal to

Choose an answer

Unity

Infinity

Zero

-Fd

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

Choose an answer

2 R

R/4

R/2

R

During the steady flow, different streamlines

Choose an answer

cannot across each other

can across each other

either of them

neither of them

A process is a reversible process, if the entropy of the system

Choose an answer

increases

decreases

remains constant

none of them

Liquids and gasses have

Choose an answer

zero viscosity

non-zero viscosity

very large viscosity

very small viscosity

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

Root out the conventional source of energy:

Choose an answer

Energy from blomass

hydroelectric energy

Geothermal energy

None of these

If the acceleration of a body is not uniform, then velocity-time graph will be:

Choose an answer

Curve

Straight line

Sphere

All of these

The value of resistivity is the least for:

Choose an answer

Copper

Aluminimum

Silver

Tungsten

Iron

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Choose an answer

voltmeters

resistance

electrode

current

Referring to above figure, a changing current in coil P can be produced:

Choose an answer

At the instant the switch is closed

At the instant the switch is opened

With the help of rheostat

All of these

None of these

Eddy current is produced when:

Choose an answer

A metal is kept in varying magnetic field

A metal is kept in steady magnetic field

A circular coil is placed in a steady magnetic field

A current is passed through a circular coil

The free electrons in metals:

Choose an answer

Are in random motion and their speed depends upon temperature

Move in particular direction

Move with speed of light

Move such that their speed does not depend on their temperature

None of these

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

Choose an answer

KHz

MHz

GHz

BHz

The power of an electric generating station is expressed in:

Choose an answer

Kilo Jule

Kilowatt-hour

Kilo watt

Watt

Which one is not produced by sound waves in air?

Choose an answer

Polarization

Diffraction

Refraction

Reflection

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