Question

The stop-watch used by a student to measure velocity of a pulse in a slinky was of least count 0.1sec. He stops the stop-watch when a pulse has made 3 journeys from one end to the other of the slinky. He finds seconds-hand to be atleast 52nd division

Which of the following would be correct time noted by him:

a) 52 sec b) 5.2 sec c) 0.52 sec d) 5.02 sec

Answer 1

c i hope this can help you