Question :
A) sand is soft and concreter is hard
B) the friction between sand and feet is less than that between concrete and feet
C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth
Answer : B
It is more difficult to walk on a sandy road than on a concrete road because
A) sand is soft and concreter is hard
B) the friction between sand and feet is less than that between concrete and feet
C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth
Answer : B
Description :
Related Questions - 1
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
A) will overflow
B) will not rise
C) depressed
D) change its meniscus
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Metals are good conductors of electricity because
A) they contain free electrons
B) the atoms are lightly packed
C) they have high melting point
D) All of the above
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out of the following, which is not emitted by radioactive substance?
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B) Electromagnetic radiations
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A) they emit light of a constant intensity
B) their distance from the earth does not change with time
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D) they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable
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