Physical Science Short Questions and Answers

Questions

41 What is the scale used for measuring the intensity of the earthquake?

A Metric Scale

B Quake Scale

C Richter Scale

D Epicentre Scale

View Answer

Answer: Richter Scale

42 An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?

A Angular Momentum

B Linear Velocity

C Angular Displacement

D None of these

View Answer

Answer: Angular Momentum

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43 Which instrument is used to measure the power of electric circuit ?

A Voltmeter

B Wattmeter

C Wavemeter

D Viscometer

View Answer

Answer: Wattmeter

44 What is the unit of Astronomical Distance ?

A Light year

B Angstrom

C Weber

D Lux

View Answer

Answer: Light year

45 Pa(Pascal) is the unit for

A thrust

B pressure

C frequency

D conductivity

View Answer

Answer: pressure

46 Product of Force and Velocity is called:

A Work

B Power

C Energy

D Momentum

View Answer

Answer: Power

47 Nuclear sizes are expressed in a unit named

A Fermi

B Angstrom

C Newton

D Tesla

View Answer

Answer: Fermi

48 Stars appears to move from east to west because

A all stars move from east to west

B the earth rotates from west to east

C the earth rotates from east to west

D the background of the stars moves from west to east

View Answer

Answer: the earth rotates from west to east

49 A piece of ice is dropped in a vesel containing kerosene. When ice melts, the level of kerosene will

A Rise

B Fall

C Remain Same

D None of these

View Answer

Answer: Fall

50 Energy possessed by a body in motion is called

A Kinetic Energy

B Potential Energy

C Both A and B

D None of these

View Answer

Answer: Kinetic Energy

51 A man presses more weight on earth at :

A Sitting position

B Standing Position

C Lying Position

D None of these

View Answer

Answer: Standing Position

52 Intensity of sound at a point is ____ its distance from the source.

A directly proportional to

B inversely proportional to

C directly proportional to square of

D inversely proportional to square of

View Answer

Answer: inversely proportional to square of

53 Light year is a unit of

A time

B distance

C light

D intensity of light

View Answer

Answer: distance

54 Which instrument is used to measure depth of ocean ?

A Galvanometer

B Fluxmeter

C Endoscope

D Fathometer

View Answer

Answer: Fathometer

55 The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called

A Nuclear fusion

B Nuclear fission

C Nuclear reaction

D Fast breeding

View Answer

Answer: Nuclear fission

56 Bolometer is used to measure

A Frequency

B Temperature

C Velocity

D Wavelength

View Answer

Answer: Velocity

57 If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states that ?

A Newton’s first law

B Newton’s Second Law

C Newton’s Third Law

D Principle of conservation of linear momentum

View Answer

Answer: Principle of conservation of linear momentum

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