Question
Physics Question on Ray optics and optical instruments
If the length of the second's hand in a stop-clock is 3 cm, then the angular velocity and linear velocity of the tip is
A
(A) 0.2047 rad/s and 0.0314 ms-1
B
(B) 0.2547 rad/s and 0.314 ms-1
C
(C) 0.1472 rad/s and 0.06314 ms-1
D
(D) 0.1047 rad/s and 0.00314 ms-1
Answer
(D) 0.1047 rad/s and 0.00314 ms-1
Explanation
Solution
Explanation:
Angular velocity of second's hand=2π60=π30=3.1430=0.1047rad/sLinear velocity, v=rω=3×10−2×0.1047=0.00314m/s