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Question

Question: A wall clock has a 5 cm long minute hand. The average velocity of the tip of the hand reaching 0600 ...

A wall clock has a 5 cm long minute hand. The average velocity of the tip of the hand reaching 0600 hrs. to 1830 hrs. is

A

2.2 × 10-14 cms-1

B

1.2 × 10 -4cms-1

C

5.6 × 10 -3 cms-1

D

3.2 × 10-3 cms-1

Answer

2.2 × 10-14 cms-1

Explanation

Solution

Displacement of minutes hand = 10 cm

Time difference between 0600 hrs to 1830 hrs is 12 hr and 30 minutes i.e., 45000 s

∴ Average velocity = 10/45000

= 2.2 × 10-4 cms-