Question # 1

When quarter of a circle is completed, the phase of vibration is:

Choose an answer

90°

180°

45°

360°

Selenium is:

Choose an answer

An insulator

A conductor

Insulator in the dark and becomes conductor when exposed to light

Conductor in the dark only

None of these

Examples of polymeric substances are:

Choose an answer

Plastic

Synthetic rubbers

Zirconia

All of these

Both (A) and (B)

Which one of the following is dimensionless.

Choose an answer

Acceleration

Velocity

Density

Angle

The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.

Choose an answer

Equal to

Greater than

Smaller than

None of these

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

Choose an answer

9 x 10⁵V

9 V

8 x 10⁶V

80 V

Balmer series lies in that region of electromagnetic wave spectrum which is called:

Choose an answer

Visible region

Invisible region

Infra-red region

ultraviolet region

None of these

An aircraft is moving with a velocity of 300 ms^-1. If all the forces acting on it are balanced, then

Choose an answer

It still moves with the same velocity

It will be just floating at the same point in space

It will be fall down instantaneously

It will lose its velocity gradually

Distance to nearest galaxy from earth is

Choose an answer

10¹⁰m

10¹⁵m

10⁴⁰m

10³⁰m

The magnitude of induced emf depends upon the:

Choose an answer

Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

There is a regular arrangement of molecules in a

Choose an answer

amorphous solids

polymeric solids

crystalline solids

none of them

By placing a dielectric in between the charges, the electrostatic force between them

Choose an answer

Is always reduced

Is always increased

Is not affected

Is increased one million times

None of these

Most of the geysers occur in:

Choose an answer

Volcanic regions

Magnetic regions

Northern region

None of these

Example of vibratory motion is

Choose an answer

mass suspended from a spring

a bob of simple pendulum

mass attached to a spring placed

all of them

A cold soft drink is kept on the balance. When the cap is opened, then the weight

Choose an answer

Increases

Decreases

First increases, then decreases

Remains same

If the distance between two charges is doubled,the force between them will become:

Choose an answer

Double

Half

One third

One fourth

The special theory of relatively treats the problems involving:

Choose an answer

Inertial frames of reference

Non-inertial frames

Non-accelerated frame

Botha (A) and (C)

Both (B) and (C)

In an adiabatic expansion, the temperature of the gas

Choose an answer

increases

becomes zero

decreases

decreases rapidly

The velocity of falling raindrop attains limited value because of

Choose an answer

Up trust of air

Viscous force exerted by air

Surface tension effect

Air currents atmosphere

The concept of field theory was put forward by

Choose an answer

Franklin

Kepler

Oersted

Michael Faraday

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Choose an answer

1 : 2 : 3

1 : 3 : 5

1 : 4 : 9

None of the above

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Choose an answer

Nitrogen

Hydrogen

Lead

Oxygen

Krypton

Most practical application of electricity involve

Choose an answer

Charges at the rest

Charges in the motion

Electrons at rest

Atoms in motion

Molecules in motion

Majority charge carriers in the p-region of p-n junction are:

Choose an answer

electrons

positrons

Holes

Neutrons

None of these

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

The waves produced in a microwave oven have wavelength.

Choose an answer

12 mm

12 cm

12 m

12 mm

Which of the following quantities remain constant in step up transformer?

Choose an answer

Current

Voltage

Power

Heat

The unit of viscosity is SI system is:

Choose an answer

Kg^-1m sec^-1

Kgm^-1 sec^-1

Kg^-1m^-1 sec

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

The velocity of sound at same temperature is maximum in

Choose an answer

H₂

N₂

O₂

NH₃

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Choose an answer

7.20 N

11.25 N

22.50 N

45.00

More Classes

Other Links

ECAT Pre General Science 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