MHT CET 2025 20th April Morning Shift | Units & Measurement and Dimensions Question 7 | 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

$(33 \pm 2)$

$(32 \pm 3)$

$(33 \pm 3)$

$(32 \pm 2)$

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

The initial and final temperatures of water as recorded by an observer are $(38.6 \pm 0.2){ }^{\circ} \mathrm{C}$ and $(82.3 \pm 0.3){ }^{\circ} \mathrm{C}$. The rise in temperature with proper error limits is

$(43.7 \pm 0.2)^{\circ} \mathrm{C}$

$\quad(43.7 \pm 0.3)^{\circ} \mathrm{C}$

$(43.7 \pm 0.1){ }^{\circ} \mathrm{C}$

$\quad(43.7 \pm 0.5)^{\circ} \mathrm{C}$

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

If $L$ is the inductance and $R$ is the resistance then the SI unit of $\frac{L}{R}$ is

second

volt

ampere

per second

MHT CET 2025 19th April Morning Shift

MCQ (Single Correct Answer)

-0

The formula for the physical quantity is $\mathrm{P}=\frac{\mathrm{x}^3 \mathrm{y}}{\mathrm{z}^2}$ and the percentage error in the determination of physical quantities $\mathrm{x}, \mathrm{y}, \mathrm{z}$ are $0.6 \%, 3 \%$ and $1.3 \%$ respectively. The percentage error in the measurement of P is

$2.2 \%$

$4.9 \%$

$5.3 \%$

$7.4 \%$

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