Physics MCQs For All Competitive Exams

Multiple Choice Questions

Que:1 Anemometer is used to measure:
a) Wind direction
b) Wind Velocity
c) Pressure Gradient
d) Wind speed and Time

Que: 2 One astronomical unit is equal to:
a) 9.46 x1015 m
b) 1.5 x10 11 m
c) 3x 108 m
d) 3.08 x1016 m

Que:3 If the length of the wire is increased by twice its length and the cross-sectional area is decreased to one-fourth then find the resistance of the conductor.

a) 4R
b) 6R
c) 8R
d) 16R

Que:4 The dimension of which of the following is the same as that of impulse?

a) Volume
b) Momentum
c) Torque
d) Change in rate of momentum

Que: 5 When two ice cubes are pressed together, they join to form one cube> Which of the following helps to hold them together:

a) Hydrogen bond formation
b) Vander Wall forces
c) Covalent attracton
d) Dipole intercation

Que: 6 The source of the sun’s energy is the process of:

a) photoelectric emission
b) nuclear fission
c) nuclear fusion
d) thermionic emission

Que:7 Whose unit is mole:

a) Mass
b) Wavelength
c) Luminous Flux
d) None of these

Que: 8 Centrifuge and Fahrenheit temperature are the same at:

a) 32 degree
b) 40 degree
c) -273 degree
d) -40 degree

Que: 9 x-rays lie between

a) ultraviolet and visible region
b) Visible and infrared region
c) Gamma rays and ultraviolet region
d) Short radio waves and Long radio waves

Que:10 Which of the following animal can hear the ultrasonic sound?

a) Rat
b) Squirrel
c) Bat
d) Cat

Que:11 The unit of speed in the FPS system is:

a) m/s
b) cm/s
c) Foot/s-1
d)Foot.s-1

Que:12 The amount of heat required to raise the temperature of a body through 1-degree centigrade is called its

a) Molar heat
b) Specific heat
c) Entropy
d) Thermal capacity

Que: 13 An object with a constant speed

a) is not accelerated
b) might be accelerated
c) is always accelerated
d) also has a constant velocity

Que: 14 What is the minimum escape velocity of the rocket to be launched into space:

a) 5 Km/Sec
b) 6 Km/Sec
c) 11 Km/Sec
d) 15 Km/Sec

Que: 15 What principle/law explains the working of hydraulic brakes in automobiles:

a) Bernoulli’s Law
b) Pascal’s Law
c) Archimedes’s Principle
d) Poiseuille’s Principle

Que: 16 Which conservation principle is applicable in the case of the motion rocket?

a) Conservation of mass
b) Conservation of energy
c) Conservation of charge
d) Conservation of momentum

Que: 17 The motion of the wheels of a bullock cart while moving on the road is an example of:

a) Oscillatory and Rotatory motion
b) Translatory and Rotatory motion
c) Oscillatory and Translatory motion
d) Translatory Motion only

Que:18 Railway tracks are banked on curves so that:

a) The train may not fall inwards
b) The weight of the train may be reduced
c) Necessary Centripetal force may be obtained from the horizontal component of the normal reaction due to track
d) no friction force may be produced between the wheels and the track

Que: 19 Which of these vector quantities?

a) Humidity
b) force
c) Charge
d) All of these

Que: 20 The instrument for measuring the intensity of earthquakes is called?

a) Ediograph
b) Pantagraph
c) Ergograph
d) Seismograph

Que: 21 Which of the following is a scalar quantity?

a) Velocity

b) Force

c) Acceleration

d) Temperture

Que: 22 Which of the following statements is true regarding Newton’s first law of motion?

a) An object at rest will remain at rest unless acted upon by an external force.

b) The force acting on an object is directly proportional to its acceleration.

c) For every action, there is an equal and opposite reaction.

d)The rate of change of momentum of an object is directly proportional to the force applied.

Que: 23 Which of the following is a unit of power?

a) Newton

b) Joule

c) Watt

d) Pascal

Que: 24 What is the SI unit of electric current?

a) Ampere

b) Volt

c) Ohm

d) Coulomb

Que: 25 The phenomenon of total internal reflection is based on which principle?

a) Huygen’s principle

b) Snell’s law

c) Fermat’s principle

d) Pascal’s principle

Que: 26 Which of the following is an example of a renewable source of energy?

a) Natural gas

b) Coal

c) Nuclear energy

d) S0lar power

Que: 27 The SI unit of capacitance is:

a) Ampere

b) Colomb

c) Farad

d) Ohm

Que: 28 Which of the following colors of light has the highest frequency?

a) Red

b) Blue

c) Yellow

d) Green

Que: 29 The process of converting a solid directly into a gas is called:

a) Sublimation

b) Condensation

c) Evaporation

d) Fusion

Que: 30 Which of the following is NOT a fundamental force in nature?

a) Gravitational force

b) Electromagnetic force

c) Strong nuclear force

d) Frictional force