Question # 1

What for is semiconductor diode used.

Choose an answer

To convert D.C. to A.C.

To convert A.C. to D.C.

To increase voltage

To decrease voltage

In compound microscope image formed by the eyepiece is

Choose an answer

Real

Inverted

erect

diminished

Usually in an operational amplifier the inputs used are of

Choose an answer

Equal voltage and same polarity

Equal voltage and opposite polarity

Different voltage and same polarity

Different voltage and opposite polarity

The force applied on unit area of a body to produce any change in shape volume or length is known as.

Choose an answer

Strain

Stress

Tensile strain

Tensile stress

When of the following colours scatters minimum.

Choose an answer

Blue

Violet

Yellow

Red

The loudness of a sound depend on its

Choose an answer

Frequency

Amplitude

Speed

Both a and b

The centre of gravity of an object is also called.

Choose an answer

Centre of buoyancy

Centre of mass

Centre of the body

Torque

The chemical behavior of an atom is determined by

Choose an answer

Mass number

Number of Isotopes

Atomic number

Binding energy

There are how many types of forces or interactions.

Choose an answer

Two

Three

Four

Five

When a charged rod is brought near bits of dry cork dust The dust will.

Choose an answer

Cling firmly to rod

Be replied from the rod

Attract itself to the rod a first and then fly off

Be repelled at first and then be drawn to the rod

If the period of a wave motion is 2 s and the wave speed is 4 cm s-1 then its frequency is

Choose an answer

1/8 C s-1

1/2 C s-1

2 C s-1

8 C s-1

At which temperature a ferromagnetic material becomes paramagnetic on healing.

Choose an answer

Kelvin temperature

Celsius temperature

Curie temperature

Fahrenheit temperature

Telecommunication by Optical fibers is done by

Choose an answer

Single mode step index fibre

Multimode step index fibre

Multimode graded index fibre

All of the above

Which quantity is not affected by a magnetic field.

Choose an answer

Moving charge

Stationary charge

Current flowing in a conductor

Charge in magnetic flux

Which is the fundamental quantity in electrostatic.

Choose an answer

Electric charge

Electric potential

Electric field

Electric field intensity

Woolen clothing a effective in keeping us warm because.

Choose an answer

An trapped int he wool acts as an insulator

Heat loss by convection and radiation is prevented

Wool is bad traciator and good absorber of heat

Wool can retain high temperatures

Which one of the following is diamagnetic

Choose an answer

Air

Water

Copper sulphate

Liquid oxygen

A simple pendulum suspended from the celling of a lift has a time period T when the lift falls freely the time period of the pendulum will become

Choose an answer

Zero

T/9.8

9.8 T

Infinity

What is the traditional name for a capacitor

Choose an answer

Choke

Condenser

Transformer

Inductor

The steady current which produces the same heating effect in a resistance in a given time as the alternating current does in the same resistance in the same time is called.

Choose an answer

Induced current

Root mean square value of an alternating current

Mean value of alternating current

Electromotive force

The action and reaction forces

Choose an answer

Must act upon the same body

Must act upon different bodies

Must be equal in magnitude but need not have the same line of action.

Different speed at the different height during ascent and during descent.

The variation of focal length of a lens when we pass from the central portion to periphery is called.

Choose an answer

Coma

Astigmatism

Spherical aberration

Chromatic aberration

How many types of quarks were suggested i 1964 quark theory.

Choose an answer

Two

Three

Four

Five

The reciprocal of decay constant lamda of a radioactive substances is equal to.

Choose an answer

total life

Half life

Mean life

Curie

In an isochoric process.

Choose an answer

Volume changes

Pressure changes

Temperature changes

Volume remains constant

Ebers-Moll model describes the working of a

Choose an answer

BJT

FET

MOSFET

UJT

White light a tungsten filament lamp is passed through sodium vapor and viewed through a diffraction gritting Which of the following best describes the spectrum which would be seen.

Choose an answer

Coloured lines on a black background

Coloured lines on a white background

Dark lines on a coloured background

Dark lines on a white background

In L - C parallel circuit the coil draws a.

Choose an answer

Lagging current

Leading current

Lagging voltage

Leading voltage

An object is -14 cm in front of a convex mirror The image 5.8 cm behind the mirror. What is the focal length of the mirror.

Choose an answer

-4.1 cm

-8.2 cm

- 9.9 cm

-20 cm

Which of the following factors determines the resolving power of an instrument.

Choose an answer

magnification

Total length of objective

Diameter of objective

Refractive index of objective

An A.C. dynamo operates on the principle of

Choose an answer

Mutual induction

Self induction

Electromagnetic induction

Mechanical induction

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