Question # 1

Which is the best sound source to produce a pure note.

Choose an answer

Tuning fork

Flute

Drum

Harmonium

According to Huygen's principle

Choose an answer

Light bends round corners

Light travels in a straight line

All points on primary wave front are considered centre of distances

Light has wave nature

When a charged particle is moved through a magnetic field if suffers is change in its.

Choose an answer

Charge

energy

Mass

direction of motion

When two point charges of equal magnitude and opposite sign exist very close to one another the arrangement is called.

Choose an answer

An electric dipole

An amperian current

A null charge

A neutral source

Three tuning forks of frequencies 400 Hz. 401 Hz and 402 Hz are sounded together The frequency of beats per sound is.

Choose an answer

0

1

2

3

The Beta particles move along.

Choose an answer

Straight path

Curved path

Zig Zag path

Circular path

The chemical behavior of an atom is determined by

Choose an answer

Mass number

Number of Isotopes

Atomic number

Binding energy

In scattering experiment which force scatters alpha particle.

Choose an answer

Nuclear force

Coulomb's force

Gravitational force

Centripetal force

In which of the following controlled nuclear chain reaction is used to liberate energy.

Choose an answer

Nuclear bomb

Atomic bomb

Hydrogen bomb

Nuclear reactor

Which onw of the following is deflected by an electric field.

Choose an answer

Alpha particles

Gama rays

Neutrons

x rays

A bus and a car moving with the same K.E. are acted upon by the same retarding force then the

Choose an answer

car will stop first

Bus will stop first

Both will stop simultaneously

Both will never stop

A newly prepared radioactive nuclide has a decay constant Lamda of 10-6 s-1 What is the approximate half life of the nuclide.

Choose an answer

1 hour

1 day

1 week

1 month

Which one the following is not a component of a Bipolar junction Transistor

Choose an answer

Base

Emitter

Collector

Grid

Which electrical quantity has the same units as electromotive force.

Choose an answer

Charge

Current

Potential difference

Power

What are the dimensions of coefficient of velocity of

Choose an answer

[MLT-1]

[ML-1T-1]

[ML-2T-1]

[MLT-2]

The typical value of forbidden energy gap in germinium is.

Choose an answer

0.7 eV

1.0 eV

1.4 eV

10 eV

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

Choose an answer

12 years

24 years

48 years

infinity

The mass defect of Bohr's atomic model is

Choose an answer

Exclusion of nuclear motion

missing of classical and quantum theories

Failed to explain the fine structure of spectral line

All of the above

A fringe is a path of.

Choose an answer

Constant amplitude

Constant phase

Same wavelength

Constant frequency

When a tennis balls is hit by a racket inasmuch a way that it spins as well as moves forward the velocity of the air on one side of the ball

Choose an answer

Increases

Decreases

Remain constant

Become zero

Andrews isothermal helps to messure

Choose an answer

Boiling point

Boyle's temperature

Temperature of inversion

Critical temperature

A bat while flying determines the location and nature of object in his way by sending.

Choose an answer

Infrasonic waves

Ultrasonic waves

Supersonic waves

Ultraviolet waves

Which part of hole located in the centre of the eye that allows light to enter the retina.

Choose an answer

Iris

Pupil

Cornea

Fovea

The number of molecules or atoms in a specific volume of a gas is independent of their

Choose an answer

Volume

Pressure

Size

Temperature

In which device is a permanent magnet used

Choose an answer

An electric bell

An electromagnet

A plotting compass

A relay

In the free expansion of a perfect gas there is no.

Choose an answer

work done

Heat exchnged

Internal energy changed

All of the above

The follow of heat from hot body to cold body is an example of

Choose an answer

Adiabatic process

Isothermal process

Reversible process

Irreversible process

The total energy of the hydrogen atom is

Choose an answer

zero

Infinite

positive

Negative

The terminal velocity in case of spherical droplet is directly proportional to.

Choose an answer

Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

In a purely inductive circuit, the current

Choose an answer

Lags behind the emf by 90^o

Leads the emf by 90 ^o

Is in phase with emf

May lag or lead the emf

A longitudinal sinusoidal wave has a wavelength of 1 cm and a period of 2s. Its wave velocity is.

Choose an answer

50 cm s-1

0.00t m s-1

100 cm s-1

5 m s-1

More Classes

Other Links

PPSC Physics Full Book 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