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The second's hand of a watch is 2 cm lon...

The second's hand of a watch is 2 cm long. The speed of the tip of this hand is

A

0.21 cm/s

B

2.1 cm/s

C

21.0 cm/s

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • The speed's hand of a which is 2cm long. The speed of the tip of this hand is

    A
    0.21cm/s
    B
    2.1 cm/s
    C
    21.0 cm/s
    D
    none of these

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    A
    2.0 cm
    B
    `2sqrt(2) cm`
    C
    1.0 cm
    D
    0.5 cm

  • The seconds hand of a clock is 2.0 cm long. Displacement of the tip of the hand in 15 s is

    A
    2.0 cm
    B
    `2 sqrt(2)` cm
    C
    1.0 cm
    D
    0.5 cm

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