Question # 1

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Choose an answer

Force

Energy

work

impulse

The relationship between Boltzmann constant k with R and N_Ais given as:

Choose an answer

k = RN_A

k =R/N_A

k = NR/N_A

None of these

Radioactivity

Choose an answer

is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

Converse of pair production is known as

Choose an answer

Compton effect

annihilation of matter

photoelectric effect

none of these

The power dissipation in a pure inductive or capacitance circuit is

Choose an answer

maximum

positive

zero

none

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Choose an answer

100 K

273 K

0 K

-273 K

The temperature at which the speed of sound becomes double as was at 27°C is

Choose an answer

273°C

0°C

927°C

1027°C

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 magnifier forms a virtual image of the object at:

Choose an answer

Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

An induced current can be produced by

Choose an answer

Constant magnetic field

Changing magnetic field

Varying electric field

Constant electric field

None of these

The study of atomic structure of crystals by X-rays was initiated by W.H.. Bragg and W.L. Bragg in

Choose an answer

1920

1926

1910

1914

The second condition for equilibrium describes that

Choose an answer

ΣFx = 0

ΣF_y = 0

ΣF = 0

Στ = 0

A positively charged particle is moving perpendicular to a uniform magnetic field. The magnetic force makes the particle to move along:

Choose an answer

An elliptical path

A circular path

A parabolic path

None of these

The more general form of second law of motion is

Choose an answer

F = ma

F × t = mV_f - mV_i

Both

None of these

If the tension in a string stretched between two fixed points is made four times, the frequency of the fundamental harmonic will become:

Choose an answer

Two times

Three times

Four times

Six times

The Earth axis of rotation is

Choose an answer

Remains fixed

Remains fixed in one direction

Not fixed

None of these

For destructive interference the path difference is give by:

Choose an answer

(m-1/2)λ

(m+1/2)λ

mλ

1/2 mλ

The bands below the valence band are

Choose an answer

completely filled and play active part in conduction process

completely filled and plays no part in conduction process

not completely filled and play active part in conduction process

not completely filled and play no part in conduction process

The atoms or molecules in a crystalline solid are held together by

Choose an answer

Attractive force

Gravitational force

Cohesive force

Electromagnetic force

Torque producing anticlockwise rotation is taken as

Choose an answer

negative

positive

zero

both negative and positive

A charged oil drop is suspended in a uniform field of 3 x 10⁴ V/m so that it neither falls nor rises.The charge on the drop will be (Mass of charge = 9.9 x 10^-15 kg and g = 10 m/s²)

Choose an answer

1.6 x 10^-18C

3.2 x 10^-18C

3.3 x 10^-18C

4.8 x 10^-18C

More Classes

Other Links

Physics General Science Test Medium Mode 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