Question # 1

X-rays spectrum may be

Choose an answer

Continuous spectrum

Discontinuous spectrum

Line spectrum

Continuous and line spectrum

The distribution of electrical charge i an object caused by teh influence of nearby charges is called.

Choose an answer

Electric potential

Electrostatic induction

Electric flux

Electric dipole moment

When the velocity of body is doubled which one is doubled too.

Choose an answer

K.E.

P.E

Momentum

Acceleration

If an elevator is moving vertically up with an acceleration 'a' the force exerted on the floor by a passing of mass 'm' is

Choose an answer

Ma

Mg

M(g +a)

M (g-a)

What is term for tendency of a system to oscillate with larger amplitude at some frequencies than at others.

Choose an answer

Resonance

Impedance

Inductance

Capacitance

The image formed by a projector is

Choose an answer

Real, inverted and enlarged

Real, upright and enlarged

Real ,inverted and diminished

Virtual, upright and diminished

When two identical waves are superimposed the velocity of the reasultant wave.

Choose an answer

Increases

Decreases

Become zero

Remain unchanged

Who discovered the exclusion principle which states that no two electrons can occupy the same quantum mechanical state in a given system.

Choose an answer

Neils Bohr

Issac Newton

Wolfgang Pauli

Max Planck

When of the following colours scatters minimum.

Choose an answer

Blue

Violet

Yellow

Red

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

Choose an answer

Attraction of nucleus

Collision with nuclei

Interactions with electrons

Electrostatic repulsion by the nucleus

The half life of a given radioactive isotope is 10 years The original mass of the isotope is 12 g What mass of this isotope remains un decayed after 20 years.

Choose an answer

0.5 g

1.2 g

3.0 g

6.0 g

Which Muslim Scientist gave the first clear description and correct analysis of pinhole camera.

Choose an answer

Nasir al Din Al tusi

Ibn al Haithem

Ibn Ishaqal kundi

al -Khawarizmi

An alternation produced in shape length or volume when a body is subjected to some external force is.

Choose an answer

Deformation

Polymerization

Crystallization

Elasticity

The magnitude of the instantaneous velocity is called the.

Choose an answer

_Displacement

Speed

Acceleration

Length

Increase in velocity of sound in air for 1 ^oC rise in temperature is.

Choose an answer

0.61 m s-1

1.61 m s-1

2.00 m s-1

61.0 m s-1

Gauss's law a most useful in cases where the charge distributions.

Choose an answer

Are made up of discrete point charges

Are finite in their spatial extent

Give rise to inverse square law fields

Posses a certain amount of symmetry

A breaker is full of water with an ice piece floating The ice place has a lead piece in it When ice cube mells then.

Choose an answer

Water overflows

Level falls

Level remains unchanged

Density increases

Which term best describes the nature of light from modern view point.

Choose an answer

Waves

Rays

Particles

Photons

The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.

Choose an answer

The photoelectric effect

The zeeman effect

The Compton effect

Quantum effect

Select the one that is not a donar

Choose an answer

P

AS

Sb

In

Critical mass is the minimum mass needed for

Choose an answer

Fusion

H-Bomb

Chain reaction

Binding energy

On which parameter, the heat capacity of a material depends upon.

Choose an answer

Density of the material

Specific heat of the material

Temperature of the material

Structure of the material

Which are different types of emission spectrum

Choose an answer

Continues spectrum

Line spectrum

Band spectrum

all of the above

Electricity is transmitted at high voltage rather than at low voltage because.

Choose an answer

It is generated at high voltage

It is safer

It requires less insulation

It wastes less energy

X-rays travels ins straight line with velocity

Choose an answer

Less than light

Greater than light

Equal to light

Equal to sound

The internal resistance of a primary cell depends upon the.

Choose an answer

Current dawn form the cell

Concentration of the solution

distance between cell electrodes

All of the above

Capacitance is directly proportional to

Choose an answer

Distance between the plates

Di electric strength

Area of the plates

Charge multiplied by the applied voltage

The fact that the edge of a shadow formed by a point source of light shining on an object is not sharp is an example of.

Choose an answer

Refraction

Diffraction

Polarization

Dispersion

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

The door of an operating refrigerator in a closed room is opened after sometime the temperature of the room will be

Choose an answer

Lowered

Raised

Unaffected

Become zero

Why a positively charged object is made neutral by someone touching it.

Choose an answer

Electrons flow from the object

Protons flow onto the object

Protons flow from the object

Protons flow onto the object

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