General Knowledge

Physics - Section 1

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Physics - Section 1

Practice and master this topic with our carefully crafted questions.

10 Questions
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Question 21
One nanometer is equal to

A
10-6m
B
10-8m
C
10-9m
D
10-5m
Correct Answer: Option C

No answer description available for this question.

Question 22
Mica is used in electrical appliances such as electric iron because mica is

A
a good conductor of heat but a bad conductor of electricity
B
a bad conductor of heat but a good conductor of electricity
C
a good conductor of heat as well as electricity
D
a bad conductor of heat as well as electricity
Correct Answer: Option A

No answer description available for this question.

Question 23
It is easier to roll a barrel full of coal tar than to pull it because

A
the full weight of the barrel comes into play when it is pulled
B
the rolling friction is much less than the sliding friction
C
more suface area of the barrel is in contact with the road when it is pulled
D
coal tar is a liquid and it flows in the barrel when it is rolled
Correct Answer: Option B

No answer description available for this question.

Question 24
Minimum number of unequal vectors which can give zero resultant are

A
two
B
three
C
four
D
more than four
Correct Answer: Option B

No answer description available for this question.

Question 25
Intensity of sound has

A
an object existence
B
a subject existence
C
no existence
D
both subjective and objective existence
Correct Answer: Option A

No answer description available for this question.

Question 26
Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from

A
east
B
west
C
northeast
D
southeast
Correct Answer: Option A

No answer description available for this question.

Question 27
Radiocarbon is produced in the atmosphere as a result of

A
collision between fast neutrons and nitrogen nuclei present in the atmosphere
B
action of ultraviolet light from the sun on atmospheric oxygen
C
action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
D
lightning discharge in atmosphere
Correct Answer: Option A

No answer description available for this question.

Question 28
It is easier to roll a stone up a sloping road than to lift it vertical upwards because

A
work done in rolling is more than in lifting
B
work done in lifting the stone is equal to rolling it
C
work done in both is same but the rate of doing work is less in rolling
D
work done in rolling a stone is less than in lifting it
Correct Answer: Option D

No answer description available for this question.

Question 29
The absorption of ink by blotting paper involves

A
viscosity of ink
B
capillary action phenomenon
C
diffusion of ink through the blotting
D
siphon action
Correct Answer: Option B

No answer description available for this question.

Question 30
Siphon will fail to work if

A
the densities of the liquid in the two vessels are equal
B
the level of the liquid in the two vessels are at the same height
C
both its limbs are of unequal length
D
the temperature of the liquids in the two vessels are the same
Correct Answer: Option B

No answer description available for this question.

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