Question # 1

The distance covered by the wave during one period is called its:

Choose an answer

Wave number

Frequency

Wavelength

Time period

Which of the following represents an electric current?

Choose an answer

C^-1

CS^-1

J.S^-1

dynes^-1

An induced current can be produced by:

Choose an answer

Constant magnetic field

Changing magnetic field

Varying magnetic field

Constant electric field

None of these

The device which allows only the flow of an A.C. through a circuit is

Choose an answer

Capacitor

Inductor

D.C. motor

Battery

The phenomenon of generation of induced emf is called:

Choose an answer

Electrostatic induced

Magnetic induced

Electromagnetic induced

Electric induced

Both A and C

Free electrons are

Choose an answer

tightly bound

fixed

loosely bound

tightly fixed

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

Choose an answer

200 W

302.5

250 W

350 W

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Choose an answer

Decreases

Increases

Remains the constant

Either of these

None of these

When a body is performing S.H.M., its acceleration is

Choose an answer

inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Choose an answer

one

two

three

four

The energy is found from Einstein's mass energy relation is called

Choose an answer

binding energy of electron

binding energy of proton

binding energy of neutron

binding energy of nucleus

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Choose an answer

Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

When monochromatic light is allowed to fall on cathode, it begins to emit electrons, these electrons are called

Choose an answer

thermoionic electrons

free electrons

photoelectrons

slow electrons

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

The motion of a body in a straight line is the motion in

Choose an answer

one dimension

two dimension

three dimension

four dimension

Thermistors are prepared under

Choose an answer

High pressure and low temperature

High pressure and high temperature

Low pressure and low temperature

Low pressure and high temprature

None of these

An induced current can be produced by:

Choose an answer

Constant magnetic field

Changing magnetic field

Varying magnetic field

Constant electric field

None of these

The curie temperature of iron is about

Choose an answer

250°C

500°C

750°C

1000°C

The earliest heat engine was

Choose an answer

petrol engine

diesel engine

electric engine

steam engine

If both the inputs given to a gate ae 1 such that the output is 0, then it is:

Choose an answer

AND gate

NOR gate

OR gate

NOT gate

Both (A) and (C)

In case of streamed lined flow of liquid, the loss of energy is

Choose an answer

Maximum

Minimum

Infinite

equal to what is in turbulent flow

Charge on proton is

Choose an answer

1.59 x 10^-9C

1.59 x 10^-7C

-1.59 x 10^-19C

1.59 x 10^-19C

The magnetic field inside a solenoid can be increased by:

Choose an answer

Increasing n

Decreasing I

Increasing I

By using iron core within solenoid

All correct except (B)

The motion in a plane is the motion in

Choose an answer

one dimension

two dimension

three dimension

four dimension

A long wire wound tightly on a cylindrical core is called:

Choose an answer

Potentiometer

Solenoid

Toroid

Wheat and stone bridge

None of these

Which one of the following is the unit of electric field intensity

Choose an answer

JC^-1

Vm^-1

Cm^-1

CJ^-1

When two protons are brought closer potential energy of both of them:

Choose an answer

Increases

Decreases

Remains same

None of these

What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

Choose an answer

10^-1A

10^-2A

10^-4A

1 mA

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Choose an answer

One joule

One erg

One electron volt

None of these

The instantaneous velocity of a body moving along a circle is directed

Choose an answer

along the radius

along the tangent

away from the circle

none of them

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

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