It is more difficult to walk on a sandy road than on a concrete road because

इंडियन गवर्नमेंट एग्जाम प्रेप

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

Correct Answer: B

Solution & Explanation

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