MHT CET · Physics · Mathematics in Physics
A student measures time for 20 oscillations of a simple pendulum as \(30 \mathrm{~s}, 32 \mathrm{~s}, 35 \mathrm{~s}\) and 35 s . If the minimum division in the measuring clock is \(1 s\), then correct mean time (in second) is
- A \((33 \pm 2)\)
- B \((32 \pm 3)\)
- C \((33 \pm 3)\)
- D \((32 \pm 2)\)
Answer & Solution
Correct Answer
(A) \((33 \pm 2)\)
Step-by-step Solution
Detailed explanation
\(T_{avg} = \frac{30+32+35+35}{4} = 33 \mathrm{~s}\) \(\Delta T_1 = |30-33|=3\)
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