JEE Advanced Model Paper 4 with solutions for online practice

Question : 5 of 54

Marks: +1, -0

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

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

EI = 0
EI is maximum
E1 = EII
EIII is maximum

Validate

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