Students I, II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different lengths of the pendulum and record time for different number of oscillations. The observations are shown in thetable. Least count for time = 0.1 s, Least count for length = 0.1 cm
Student Length of the pendulum (cm) Number of oscillations (n) Total time for (n) oscillations (s) Time period
I 64.0 8 128.0 16.0
II 64.0 4 64.0 16.0
III 20.0 4 36.0 9.0

If E1 , EII and EIII are the percentage errors in g . i.e. (
Δg
g
×100) for student I , II and III respectively.

Question

Student	Length of the pendulum (cm)	Number of oscillations (n)	Total time for (n) oscillations (s)	Time period
I	64.0	8	128.0	16.0
II	64.0	4	64.0	16.0
III	20.0	4	36.0	9.0

×100) for student I , II and III respectively.

Examsnet · Accepted Answer

Correct Answer is : EIII is maximum

JEE Advanced Model Paper 4 with solutions for online practice