general science

Physics MCQ Questions and Answers Page - 8

1.

In the absence of the earth’s atmosphere, sky would appear

Answer/ Hint      

Answer : D

Explanation :

2.

Which one of the following processes is responsible for the glittering of air bubble rising through water  ?

Answer/ Hint      

Answer : C

Explanation :

3.

The colour of the ocean appears to be blue because the sunlight falling on it is

Answer/ Hint      

Answer : D

Explanation :

4.

When we see an object, the image formed on the retina is

Answer/ Hint      

Answer : A

Explanation :

5.

Person who is colour-blind cannot distinguish between

Answer/ Hint      

Answer : B

Explanation :

6.

Which of the following waves cannot be polarised  ?

Answer/ Hint      

Answer : D

Explanation :

7.

The lens of the eye is behind the  :

Answer/ Hint      

Answer : A

Explanation :

8.

After a shower of rain, a rain bow is seen  :

Answer/ Hint      

Answer : B

Explanation :

9.

A person suffering from long sightedness wears spectacles having  :

Answer/ Hint      

Answer : D

Explanation :

10.

Distant objects can be seen with the help of  ?

Answer/ Hint      

Answer : B

Explanation :

11.

Which of the following phenomena is involved in Kaleidoscope  ?

Answer/ Hint      

Answer : B

Explanation :

12.

In a magnifying glass  _____________  lens is used.

Answer/ Hint      

Answer : A

Explanation :

13.

Why does a black board appears black in colour  ?

Answer/ Hint      

Answer : D

Explanation :

14.

Which one of the following is not a property of electromagnetic waves  ?

Answer/ Hint      

Answer : A

Explanation :

15.

Convex mirror is generally used in  __________ .

Answer/ Hint      

Answer : D

Explanation :

16.

If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used  ?

Answer/ Hint      

Answer : A

Explanation :

17.

Why does water tank appear shallower when viewed from the top  ?

Answer/ Hint      

Answer : B

Explanation :

18.

Which colour is formed when Red and Green are mixed  ?

Answer/ Hint      

Answer : B

Explanation :

19.

Which phenomena shows the particle nature of light  ?

Answer/ Hint      

Answer : C

Explanation :

20.

What is the value of the Least Distance of Distinct vision (in cm) for a normal human being ?

Answer/ Hint      

Answer : B

Explanation :

21.

When light passes from one medium to another, this phenomenon of change in its direction is called  _____________ .

Answer/ Hint      

Answer : A

Explanation :

22.

The side mirrors of vehicles are of which type of mirrors  ?

Answer/ Hint      

Answer : A

Explanation :

23.

An image formed by a concave mirror on a screen is called

Answer/ Hint      

Answer : B

Explanation :

24.

The light is composed of small particles, called  ____________ .

Answer/ Hint      

Answer : C

Explanation :

25.

Which among the following is most helpful in energy savings  ?

Answer/ Hint      

Answer : D

Explanation :

26.

Which mirror is used by doctors for examining eyes, ears, nose and throat  ?

Answer/ Hint      

Answer : A

Explanation :

27.

Ability to distinguish two closely placed objects is

Answer/ Hint      

Answer : A

Explanation :

28.

What are the objects like sun that give out or emit light of their own called  ?

Answer/ Hint      

Answer : B

Explanation :

29.

In which of the following mirror size of image formed is always equal to the size of object ?

Answer/ Hint      

Answer : C

Explanation :

30.

Which of the following term does  NOT  represent electrical power in circuit  ?

Answer/ Hint      

Answer : B

Explanation :

31.

What is/are the cause(s) of arise hypermetropia  ?

Answer/ Hint      

Answer : C

Explanation :

32.

In which mirror, image formed is virtual, erect and point sized  ?

Answer/ Hint      

Answer : B

Explanation :

33.

Which of the following controls the size of pupil in human eye  ?

Answer/ Hint      

Answer : B

Explanation :

34.

In a concave mirror if object is placed at centre of curvature, then image will be  ____________ .

Answer/ Hint      

Answer : D

Explanation :

35.

What is the cause of arise of myopia  ?

Answer/ Hint      

Answer : A

Explanation :

36.

The splitting of while light into its component colours is called  ____________ .

Answer/ Hint      

Answer : C

Explanation :

37.

The human eye forms the image of an object at its  _____________ .

Answer/ Hint      

Answer : D

Explanation :

38.

Light waves are  ____________ .

Answer/ Hint      

Answer : C

Explanation :

39.

What kind of mirror would be best suited for use in a solar cooker  ?

Answer/ Hint      

Answer : A

Explanation :

40.

The change in focal length of an eye lens is caused by the action of the  ____________ .

Answer/ Hint      

Answer : C

Explanation :

41.

Which of the following controls the amount of light entering the eye  ?

Answer/ Hint      

Answer : A

Explanation :

42.

Which of the following lens always forms a virtual, erect and diminished image  ?

Answer/ Hint      

Answer : A

Explanation :

43.

A person having hypermetropia has to keep a reading material at what distance (in cm) for comfortable reading  ?

Answer/ Hint      

Answer : B

Explanation :

44.

A person with hypermetropia  ____________ .

Answer/ Hint      

Answer : A

Explanation :

45.

The eye lens forms which type of image on retina  ?

Answer/ Hint      

Answer : B

Explanation :

46.

In science, a push or a pull on an object is called as  ____________ .

Answer/ Hint      

Answer : C

Explanation :

47.

What will be the focal length when human eye lens becomes thin  ?

Answer/ Hint      

Answer : A

Explanation :

48.

Energy is continuously created in the sun du to  :

Answer/ Hint      

Answer : A

Explanation :

49.

In electronics what comes under tank circuit  ?

Answer/ Hint      

Answer : C

Explanation :

50.

The  substance which conducts current in the solid state is

Answer/ Hint      

Answer : B

Explanation :

51.

The best conductor of heat among the following is

Answer/ Hint      

Answer : B

Explanation :

52.

Tungsten is used for the manufacture of the filament of an electric bulb, because

Answer/ Hint      

Answer : D

Explanation :

53.

Dynamo is a device for converting

Answer/ Hint      

Answer : B

Explanation :

54.

Which of the following metals is used for the manufacture of heating elements provided in electric iron  ?

Answer/ Hint      

Answer : C

Explanation :

55.

When the main switch of the house is put off it disconnects the

Answer/ Hint      

Answer : C

Explanation :

56.

Magnetism in materials is due to

Answer/ Hint      

Answer : B

Explanation :

57.

A multi meter is used to measure

Answer/ Hint      

Answer : D

Explanation :

58.

The metal used to make lightning conductors is

Answer/ Hint      

Answer : C

Explanation :

59.

In a rechargeable cell what kind of energy is stored within the cell  ?

Answer/ Hint      

Answer : C

Explanation :

60.

Superconductors are those elements

Answer/ Hint      

Answer : B

Explanation :

61.

Fleming’s right hand rule is used to find the direction of the

Answer/ Hint      

Answer : C

Explanation :

62.

Which of the following circuit elements is used to  “block”  DC in an electronic circuit  ?

Answer/ Hint      

Answer : B

Explanation :

63.

In the process of magnetisation of a bar

Answer/ Hint      

Answer : A

Explanation :

64.

The fuse in our domestic electric circuit melts when there is a high rise in

Answer/ Hint      

Answer : B

Explanation :

65.

Which of the following principle is used to produce  ‘low-temperatures’  ?

Answer/ Hint      

Answer : D

Explanation :

66.

The ozone hole that has been detected lies in the atmosphere above

Answer/ Hint      

Answer : B

Explanation :

67.

The device used to change the speed of an electric fan is

Answer/ Hint      

Answer : B

Explanation :

68.

If input frequency of a full wave rectifier be  n,  then output frequency would be

Answer/ Hint      

Answer : D

Explanation :

69.

The spokes used in the wheel of a bicycle increase its

Answer/ Hint      

Answer : A

Explanation :

70.

A transformer works on the principle of

Answer/ Hint      

Answer : B

Explanation :

71.

The unit of electrical power is

Answer/ Hint      

Answer : B

Explanation :

72.

When a bar magnet is cut into two equal halves, the pole strength of each piece –

Answer/ Hint      

Answer : D

Explanation :

73.

Pure water is bad conductor of electricity because it is

Answer/ Hint      

Answer : A

Explanation :

74.

The nature of fuse wire is

Answer/ Hint      

Answer : A

Explanation :

75.

A transformer

Answer/ Hint      

Answer : B

Explanation :

76.

Electricity is transmitted over long distances

Answer/ Hint      

Answer : B

Explanation :

77.

The material used in the fabrication of a transistor is

Answer/ Hint      

Answer : C

Explanation :

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