Question # 1

If the two charges in Coulomb's law have double distance between them, then electric force

Choose an answer

Becomes two-fold

Becomes four-fold

Remains the same

None of these

Chock consumes externally small

Choose an answer

Charge

Current

Power

Potential

The efficiency of diesel engine is

Choose an answer

25%

25 - 30%

35%

35 - 40%

A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at

Choose an answer

inverting input

non-inverting input

any one of the input terminal

none of them

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Choose an answer

Magnetic field

Electrostatic field

Electromagnetic field

All of these

None of these

The distance travelled byα-particle in a medium before coming to rest, is called

Choose an answer

range ofγ-particle

range of neutrons

range of particle

none of these

The velocity given to a body to go out of the influence of earth's gravity is known as:

Choose an answer

Terminal velocity

Orbital velocity

Escape velocity

None of these

The example of mechanical wave is

Choose an answer

waves in ropes

waves on water surface

waves in air

all of them

A full-scale deflection is obtained in a galvanometer with a current of few

Choose an answer

ampere

volts

milliampere

ohm

Alternating current can not be measured by D.C. ammeter because

Choose an answer

A.C. can not pass through D.C. Ammeter

A.C. changes direction

Average value of current for complete cycle is zero

D.C. Ammeter will get damaged

Electromagnetic waves emitted by hot bodies are called:

Choose an answer

Photoelectrons

Alpha rays

Thermal radiation

None of these

One radian is:

Choose an answer

Greater than one degree

Less than one degree

Equal to degree

none of these

Computer chips are made from:

Choose an answer

Iron

Silicon

Helium

Stontium

Aluminium

If the formula PV = nRT, n denotes:

Choose an answer

Number of molecules per unit volume

Number of moles

Number of molecules

None of these

The CRO deflects the beam of electrons, when they passes through uniform

Choose an answer

electric field

gravitational field

magnetic flax

magnetic field

Essential characteristic of equilibrium is

Choose an answer

Momentum equal to zero

Acceleration equal to zero

Kinetic energy equal to zero

Velocity equal to zero

Which branch of physics deals with the structure and properties of solids

Choose an answer

Atomic Physics

Plasma Physics

Molecular Physics

Solid state physics

Density of fluid is defined as:

Choose an answer

Its volume to mass ratio

Product of volume and mass

Its mass of volume ratio

None of these

The direction of the streamlines is the same as the direction of the

Choose an answer

force

torque

velocity

weight

Which of these is not a radiation detector

Choose an answer

Wilson cloud chamber

cyclotron acceleration

Geiger Miller counter

solid state detector

The half life of radioactive substances depends upon

Choose an answer

amount of substance

energy of substance

state of substance

temperature of substance

The basic circuit element in D.C. circuit is:

Choose an answer

A capacitor

A resistor

An inductor

Both (A) and (C)

Both (A) and (B)

Kirchhoff's first rule is also called:

Choose an answer

Loop rule

Thumb rule

Point rule

Right hand rule

None of these

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

Choose an answer

Same

Different

Opposite to each other

At 60º with each other

Both (B) and (C)

Light waves are:

Choose an answer

Transverse wave

Longitudinal wave

Compressional wave

None of them

If a liquid is heated in weightlessness, the heat is transmitted through

Choose an answer

Conduction

Convection

Radiation

Neither, because the liquid cannot be heated in weightlessness

The quantity F x t is called as

Choose an answer

momentum

velocity

acceleration

impulse

The S.I unit of frequency is

Choose an answer

Vibrations s^-2

Ms^-1

Hertz

s^-1

The electric field, magnetic field and the direction of their propagation are mutually

Choose an answer

perpendicular

parallel

none of these

Two dissimilar metals joined at their ends kept at constant temperature constitute:

Choose an answer

Cell

Voltmeter

Thermocouple

Potentiometer

None of these

The locus of all points in a medium having same phase of vibration is called

Choose an answer

Crest

Trough

Wavelength

Wave-front

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