Students I, II and III perform an experiment for measuring the acceleration due to…
Physics · JEE Main · NTA Exams — Physics and Measurement
Students I, II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different length of the pendulums and record time for different number of oscillations. The observations are shown in the table.
Least count for length = 0.1 cm
Least count for time = 0.1 s
|
Student |
Length of the pendulum L(cm) |
Number of oscillations (n) |
Total time for (n) oscillations t(s) |
Time period \(T=\frac{t}{n}[5]\) |
|
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 EI, EII and EIII, are the percentage error in g, i.e.\(\left(\frac{\Delta \mathrm{g}}{\mathrm{~g}} \times 100\right)\) for students I, II, and III, respectively, then
- EI = 0
- EIII = 0
- EI = EII
- EII is maximum
Answer
(D) E II is maximum
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