The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.
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Ответ:
Least count of the pulse stopwatch is given by
this means each division of the stopwatch will measure 0.1 s of time
After 3 journeys from one end to other we can see that total time that is measured here is shown by the clock as 52nd division
So here total time is given as
Time = (Number of division) (Least count)
now we will have
Ответ:
Option (a) is the correct answer.
Explanation:
When we say something to a person related to his performance in a task, office, school, college etc then it is known as a feedback.
A feedback can be positive or negative.
For example, a student's performance was not up to the mark so his teacher remarked as capable of doing better by putting some more efforts. This remark represents a positive feedback.
Thus, we can conclude that feedback is always given to you by other people.