Sarthaks Test
0 votes
1.3k views
in Physics by (8.6k points)

Time for 20 oscillations of a pendulum is measured as t1= 39.6 s; t2= 39.9 s; t3= 39.5 s. What is the precision in the measurements? What is the accuracy of the measurement?

1 Answer

0 votes
by (13.6k points)
selected by
 
Best answer

(a) Precision is given by the least count of the instrument.

For 20 oscillations, precision = 0.1 s

For 1 oscillation, precision = 0.005 s.

(b) Average time t = (39.6 + 39.9 + 39.5/3)s = 39.6s

period = 39.6/20 = 1.98 s

Max. observed error = (1.995 - 1.980)s = 0.015s

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...