Question # 1

The weight 'mg' of the bob is resolved into

Choose an answer

one component

two components

three components

four components

Newton's law of motion do not hold in

Choose an answer

an accelerated frame of reference

an unaccelerated frame of reference

both of these

none of these

The photoelectric effect, the maximum energy of photoelectrons depends on the

Choose an answer

particular metal surface

frequency of incident light

both of them

none of them

If the objects of different masses move with the same velocity, then it is more difficult to stop the

Choose an answer

lighter of the two

massive of the two

any one of them

both of them

The molecules or ions in a crystalline solids are

Choose an answer

static

not static

randomly moving

all of them

In the region surrounding a current carrying wire:

Choose an answer

A magnetic field is setup

The lines of force are elliptical

Direction of lines of forces depends upon direction of current

Both (A) and (C)

All of these

Inverter is the name given to:

Choose an answer

NOT gate

OR gate

NOR gate

AND gate

XOR gate

A pair of quark and antiquark makes a:

Choose an answer

Meson

Baryon

Proton

Neutron

None of these

A sinusoidally alternating voltage or current can be graphically represented by a:

Choose an answer

Vector

Rotating vector

Clockwise vector

Anticlockwise voltage vector

None of these

Physicist George Simon ohm was a

Choose an answer

German physical

French physicist

Chinese physicist

Russian physicist

According to the Max plank, energy is redialed or absorbed in

Choose an answer

discrete packets

continuous waves

either of them

none of these

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Choose an answer

Quadratic equation

Equation of discontinuity

Equation of continuity

None of the above

One KWh is equal to:

Choose an answer

3.6 x 10²J

3.6 KJ

3,6 x 10¹KJ

3,6 MJ

When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the

Choose an answer

base and emitter

collector and emitter

base and collector

any one of these

Which of the following represents an electric current?

Choose an answer

C^-1

CS^-1

J.S^-1

dynes^-1

In a heat engine, heat is supplied by the

Choose an answer

cold reservoir

sink

hot reservoir

none of them

A body is floating in a liquid. The up thrust on the body is

Choose an answer

Equal to weight of liquid displaced

Zero

Less than the weight of liquid displaced

Weight of body-weight of liquid displaced

In the doping process, the ratio of the doping atoms to the semi conductor atom is

Choose an answer

1 to 10

1 to 10³

1 to 10⁶

1 to 10⁹

The results of mechanical tests are usually expressed in terms of

Choose an answer

stress

strain

stress and strain

neither strees nor strain

The slopes of the tangent at any point on the curve gives the value of the

Choose an answer

average velocity at that point

instantaneous velocity at that point

average acceleration at that point

instantaneous acceleration at that point

The special theory of relativity treats problems invoving

Choose an answer

inertial frame of references

accelerating frame of references

both of these

none of these

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Choose an answer

200 J

100 J

1000 J

400 J

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

Choose an answer

1916

1919

1921

1923

Ohm is the unit of

Choose an answer

current

capacitance

energy

resistance

In a straight current carrying conductor, the direction of magnetic field can be found by

Choose an answer

right hand rule

left hand rule

head to tall rule

none of these

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

Blood pressure is measured by the instrument

Choose an answer

stethoscope

sphygmomanometer

barometer

none of them

The nucleus left after the emission of some radiation is called:

Choose an answer

Parent nucleus

Daughter necleus

Mother necleus

Any of these

None of these

At O° K which of the following properties of a gas will be zero?

Choose an answer

Kinetic energy

Potential energy

Vibrational energy

Density

Efficiency of carnot engine is independent of the

Choose an answer

temperature of sink

temperature of source

nature of the working substances

none of them

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Choose an answer

polonium uranium

uranium and radium

polonium and radium

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