Question # 1

The horizontal component of a projectile moving with initial velocity of 500 ms^-1at an angle 60° to x-axis is

Choose an answer

500 ms^-1

1000 ms^-1

250 ms^-1

Zero

When the atomic particle are moving with velocities approaching that of light:

Choose an answer

Newton's laws become valid

Relativistic effects become prominent

Botha(A) and (B) are valid

Neither (A)nor (B)

There mass becomes zero.

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Choose an answer

Mechanical waves

Electromagnetic waves

Matter waves

All of them

In solids, only following type/s of wave can travel:

Choose an answer

Transverse

Longitudinal

Both A and B

None of them

Internal friction of fluid is called

Choose an answer

Surface tension

Viscosity

Resistance

Cohesive force

Computer chips are made from

Choose an answer

Conductors

Semiconductors

Insulators

Both A and B

The special theory of relativity is based on:

Choose an answer

Four postulates

Three postulates

Two postulates

One postulate

None of these

The dimension of linear inertia is:

Choose an answer

MLT²

ML°T^-2

ML°T°

MLT^-1

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Choose an answer

49 rad/sec²

1 rad/sec²

0.16 rev/sec²

Both A and C

Both B and C

An alpha particle has a charge of

Choose an answer

+2e

-2e

-e

+3e

Hotness and coldness of an object is represented in terms:

Choose an answer

Heat

Temperature

Chemical energy

None of these

In case of two identical charges placed certain distance apart, the electric field lines are:

Choose an answer

Straight lines

Sine curves

Curved

Both (A) and (B)

None of these

The electric field lines start from:

Choose an answer

Positive charge

Negative charge

Either A and B

Neutron

An atom

Which of the following is not thermo dynamical function?

Choose an answer

Enthalpy

Work done

Gibb's energy

Internal energy

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

Choose an answer

Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Choose an answer

greater than the frequency of applied force

equal to the frequency of applied force

less than the frequency of applied force

all of them

Nowadays, Most of the electric energy is produced by the A.C. generators using:

Choose an answer

Hydal water

Geothermal energy

Solar energy

Biomass

Both (B) and (D)

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

Choose an answer

The faster one

Depends on their mass

The slower one

Both will reach simultaneously

The lasing or active medium in He-Ne laser discharge tube is:

Choose an answer

Nitrogen

Helium

Hydrogen

Neon

None of these

Earth is considered to be

Choose an answer

a non-inertial frame

an inertial frame

an accelerated frame

none of the above

The conduction band in a solid

Choose an answer

may be empty

cannot be empty

should be filed

all of them

The induced current in the loop can be Increased by

Choose an answer

Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

One coulomb of charge is created by

Choose an answer

10 electrons

1.6 x 10^-19electrons

6.25 x 10¹⁸electrons

6.25 x 10²¹electrons

Work done in lower and bucket into the well is:

Choose an answer

Zero

Positive

Negative

None of these

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

An electric field is generated along the wire when:

Choose an answer

Its resistance is very high

A constant potential is maintained across the wire

Net current through the wire is zero

A constant potential difference is maintained across the wire

Either (A) or (D)

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Choose an answer

Streamline, cannot

Turbulent, cannot

Streamline, can

None of these

Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at

Choose an answer

125 K

25 K

263 K

163 K

The vibrations of factory floor caused by the running of heavy machinery is an example of

Choose an answer

free vibration

natural vibrations

forced vibrations

all of them

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Choose an answer

Voltmeter

Avometer

Ammeter

None of these

Which of the following medium/media can transmit both transverse and longitudinal waves:

Choose an answer

Solids

Liquids

Gases

All of them

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