Physical World Test

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Physical World Test - 1

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following forces is not fundamental force in nature?

A
Gravitational force

B
Electromagnetic force

C
Strong nuclear force

D
Tension

Solution

The four fundamental forces in nature are as:
(i) Gravitational force
(ii) Electromagnetic force
(iii) Strong nuclear force
(iv) Weak nuclear force
Among the given forces, tension is not a fundamental force in nature.
Question 2
4 / -1

What is the range of the gravitational force?

A
10^-2 m

B
10^-15 m

C
Infinite

D
10^-10 m

Solution

The range of the gravitational force is infinite.
Question 3
4 / -1

Force of friction and tension in a string are

A
Gravitational forces

B
Electromagnetic forces

C
Nuclear forces

D
Weak forces

Solution

Force of friction and tension in a string are electromagnetic forces.
Question 4
4 / -1

Pick out the correct statements about the strong nuclear force from the following.
S1 : It is charge independent.
S2 : It is the strongest force in nature.
S3 : Its range is very large.
S4 : It is responsible for the stability of nuclei.

A
S1 and S3

B
S1, S2 and S3

C
S1, S2 and S4

D
S2 and S3

Solution

The range of strong nuclear force is very small, of about nuclear dimensions (10^-15 m).
Question 5
4 / -1

Inverse square law of distance is followed by

A
Gravitational forces

B
Electromagnetic forces

C
Both (a) and (b)

D
Neither (a) and nor (b)

Solution

Both gravitational and electromagnetic forces follow inverse square law of distance.

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Re-Attempt Weekly Quiz Competition

Physical World Test - 1

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Physical World Test - 1

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Question 1

Gravitational force

Electromagnetic force

Strong nuclear force

Tension

Solution

Question 2

10-2 m

10-15 m

Infinite

10-10 m

Solution

Question 3

Gravitational forces

Electromagnetic forces

Nuclear forces

Weak forces

Solution

Question 4

S1 and S3

S1, S2 and S3

S1, S2 and S4

S2 and S3

Solution

Question 5

Gravitational forces

Electromagnetic forces

Both (a) and (b)

Neither (a) and nor (b)

Solution

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10^-2 m

10^-15 m

10^-10 m