Question

Match the Column I with Column II

Column I		Column II
(A)	When a body does work against friction, kinetic energy	(p)	Independent of time
(B)	Work done by a body Is	(q)	Time
(C)	Power of a body varies inversely as	(r)	Force must be conservative
(D)	When work done over a closed path is zero	(s)

• A. $(A) \rightarrow (p),(B) \rightarrow (q),(C) \rightarrow (r),(D) \rightarrow (s)$
• B. $(A) \rightarrow (q),(B) \rightarrow (r),(C) \rightarrow (s),(D) \rightarrow (p)$
• C. $(A) \rightarrow (s),(B) \rightarrow (r),(C) \rightarrow (q),(D) \rightarrow (p)$
• D. $(A) \rightarrow (s),(B) \rightarrow (p),(C) \rightarrow (q),(D) \rightarrow (r)$

Answer 1

Answer: (D)

$(A) \rightarrow (s),(B) \rightarrow (p),(C) \rightarrow (q),(D) \rightarrow (r)$

Answer 2

When a body does some work against friction, its kinetic energy decreases.

A – s

Work done by a body is independent of time.

B – P

Power of body (P = W/t) varies inversely as time.

C – q

When work done over a closed path is zero, force must be conservative

D – r