general science

Physics MCQ Questions and Answers Page - 10

1.

A rectangular coil of copper wire is rotating in a magnetic field. The direction of the induced current changes once in each  ?

Answer/ Hint      

Answer : C

Explanation :

2.

What will be equivalent resistance of two resistors  R1  and  R2  when connected in series  ?

Answer : B

Explanation :

3.

The phenomena of electromagnetic induction is  ____________ .

Answer/ Hint      

Answer : C

Explanation :

4.

The resistance of a metal conductor is  ____________ .

Answer/ Hint      

Answer : A

Explanation :

5.

While moving from one end to another end inside a solenoid, its magnetic field  ____________ .

Answer/ Hint      

Answer : C

Explanation :

6.

Which of the following is Fleming’s right hand rule  ?

Answer/ Hint      

Answer : D

Explanation :

7.

What is the direction of Magnetic field lines in a magnet  ?

Answer/ Hint      

Answer : C

Explanation :

8.

Which of following property of a proton cannot change while it moves freely in magnetic field  ?

Answer/ Hint      

Answer : A

Explanation :

9.

When the direction of motion of coil is perpendicular to the electromagnetic field, then the value of induced current is  ___________ .

Answer/ Hint      

Answer : B

Explanation :

10.

Which among the following is  NOT  a conductor of electricity  ?

Answer/ Hint      

Answer : D

Explanation :

11.

Which of the following statement is  INCORRECT  ?

Answer/ Hint      

Answer : D

Explanation :

12.

There is a circular coil having  n  turns. The field produced is how many times larger than produced by a coil of single turn  ?

Answer/ Hint      

Answer : A

Explanation :

13.

When two resistors are connected in parallel, they have  ___________ .

Answer/ Hint      

Answer : B

Explanation :

14.

What precaution should be taken to avoid the overloading of domestic electric circuits   ?

Answer/ Hint      

Answer : D

Explanation :

15.

What is the effective resistance (in Ω)  of two resistors  20 Ω  and  30 Ω  connected in parallel  ?

Answer/ Hint      

Answer : B

Explanation :

16.

For which diode is used  ?

Answer/ Hint      

Answer : D

Explanation :

17.

Who among the following developed the technology of underground nuclear explosion  ?

Answer/ Hint      

Answer : A

Explanation :

18.

The mass of a star is two times the mass of the Sun. how it will come to an end  ?

Answer/ Hint      

Answer : A

Explanation :

19.

On which of the following techniques photo-state machine works  ?

Answer/ Hint      

Answer : C

Explanation :

20.

“curie” is unit of  :

Answer/ Hint      

Answer : A

Explanation :

21.

Which of the following is used in oven  ?

Answer/ Hint      

Answer : C

Explanation :

22.

Which of the following is used for regulated electric supply  ?

Answer/ Hint      

Answer : A

Explanation :

23.

The shape of our milky way galaxy is

Answer/ Hint      

Answer : D

Explanation :

24.

The different colours of different stars are due to the variation of

Answer/ Hint      

Answer : A

Explanation :

25.

Solar energy is converted into chemical energy during

Answer/ Hint      

Answer : B

Explanation :

26.

The term  ‘equinox’  means

Answer/ Hint      

Answer : C

Explanation :

27.

Which of the following occurred first  ?

Answer/ Hint      

Answer : C

Explanation :

28.

Electrostatic precipitator is used to control the pollution of

Answer/ Hint      

Answer : A

Explanation :

29.

‘Cryogenics’ is a science dealing with

Answer/ Hint      

Answer : B

Explanation :

30.

The mass-energy relation is the outcome of

Answer/ Hint      

Answer : D

Explanation :

31.

Nuclear reactors used to produce electricity are based on

Answer/ Hint      

Answer : A

Explanation :

32.

Remote-sensing device has an inbuilt source of

Answer/ Hint      

Answer : D

Explanation :

33.

Energy of Ultraviolet rays is greater than

Answer/ Hint      

Answer : A

Explanation :

34.

According to the theory of relativity, which of the following always remains constant  ?

Answer/ Hint      

Answer : D

Explanation :

35.

Atomic power plant works on the principle of

Answer/ Hint      

Answer : A

Explanation :

36.

Which of the following is  NOT  a property of heavy water  ?

Answer/ Hint      

Answer : A

Explanation :

37.

Curie point is the temperature at which

Answer/ Hint      

Answer : B

Explanation :

38.

The scientist who first sent electromagnetic waves to distant places is

Answer/ Hint      

Answer : C

Explanation :

39.

Which type of reaction produces the most harmful radiation  ?

Answer/ Hint      

Answer : B

Explanation :

40.

In MRI machine, which one of the following is used  ?

Answer/ Hint      

Answer : D

Explanation :

41.

Gamma rays have greatest similarity with

Answer : C

Explanation :

42.

In a nuclear reactor. One of the following is used as a fuel.

Answer/ Hint      

Answer : B

Explanation :

43.

After long periods of use, a grey spot develops on the inside of a bulb. This is because

Answer/ Hint      

Answer : C

Explanation :

44.

Forged documents are detected by

Answer/ Hint      

Answer : A

Explanation :

45.

The radiation initially produced in fluorescent tube is

Answer/ Hint      

Answer : B

Explanation :

46.

The important unit of a microprocessor is

Answer/ Hint      

Answer : D

Explanation :

47.

In nuclear reactor, heavy water is used as  :

Answer/ Hint      

Answer : C

Explanation :

48.

Which of the following is NOT a part of a CRT  ?

Answer/ Hint      

Answer : D

Explanation :

49.

In the remote control of television, electromagnetic waves used are

Answer/ Hint      

Answer : D

Explanation :

50.

A radioactive substance does not undergo any change  (in mass or charge) during

Answer/ Hint      

Answer : A

Explanation :

51.

Radioactive elements can be traced out in living cell through a technique called

Answer/ Hint      

Answer : C

Explanation :

52.

A  NOT  gate can be implemented by  :

Answer/ Hint      

Answer : D

Explanation :

53.

Photon is the fundamental unit/quantum of

Answer/ Hint      

Answer : D

Explanation :

54.

The term reactor referred to in waste water treatment is

Answer/ Hint      

Answer : D

Explanation :

55.

Alpha particle is the nucleus of an atom of

Answer/ Hint      

Answer : C

Explanation :

56.

Which of the following supports particle nature of photons  ?

Answer/ Hint      

Answer : C

Explanation :

57.

What is a neuron  ?

Answer/ Hint      

Answer : D

Explanation :

58.

Matter waves are

Answer/ Hint      

Answer : A

Explanation :

59.

According tp special theory of relativity the mass of a particle

Answer/ Hint      

Answer : A

Explanation :

60.

A moving neutron collides with a stationary  – particle. The fraction of the kinetic energy lost by the neutron is

Answer/ Hint      

Answer : D

Explanation :

61.

The unit of Planck’s constant is

Answer/ Hint      

Answer : A

Explanation :

62.

Which of the following options correctly explains the term heat budget ?

Answer/ Hint      

Answer : B

Explanation :

63.

The abbreviation  LHC  stands for which machine  ?

Answer/ Hint      

Answer : B

Explanation :

64.

Planck’s constant has the dimensions of  :

Answer/ Hint      

Answer : A

Explanation :

65.

In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie  ?

Answer/ Hint      

Answer : C

Explanation :

66.

Beta rays emitted by a radioactive material are

Answer/ Hint      

Answer : B

Explanation :

67.

If an electron and a photon have the same wavelength, then they will have the same

Answer/ Hint      

Answer : B

Explanation :

68.

Curie is an unit of

Answer/ Hint      

Answer : A

Explanation :

69.

Energy travels from Sun to Earth through

Answer/ Hint      

Answer : C

Explanation :

70.

The commonly used coolant in refrigerators is

Answer/ Hint      

Answer : C

Explanation :

71.

Sending a frame to a group of stations is known as

Answer/ Hint      

Answer : C

Explanation :

72.

Which is the most suitable unit for expressing nuclear radius  ?

Answer/ Hint      

Answer : C

Explanation :

73.

Which among the following waves is used for communication by artificial satellites  ?

Answer/ Hint      

Answer : A

Explanation :

74.

What is found in frequency modulation  ?

Answer/ Hint      

Answer : A

Explanation :

75.

Crooke’s tube is used to produce

Answer/ Hint      

Answer : C

Explanation :

76.

Why are we able to hear short wave broadcasts better than long wave broadcasts  ?

Answer/ Hint      

Answer : A

Explanation :

77.

When a vehicle passes,  TV  reception gets distorted. This is because

Answer/ Hint      

Answer : B

Explanation :

78.

The atmospheric layer reflecting radio waves is called

Answer/ Hint      

Answer : B

Explanation :

79.

What is the full form of  ‘AM’  regarding to radio broadcasting  ?

Answer/ Hint      

Answer : D

Explanation :

80.

Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy  ?

Answer/ Hint      

Answer : B

Explanation :

<< Previous
Physics MCQ Questions and Answers Page - 10