High-Yield MDCAT Physics Measurement MCQs 3 Free Quiz

Master MDCAT Physics Measurement MCQS Chapter 1 with 20 high-yield practice MCQs covering percentage errors, dimensional analysis, uncertainties, and unit conversions. MDCAT physics measurement MCQs questions with solutions, how to solve percentage uncertainty in simple pendulum MDCAT, high-yield physics MCQs for medical entry test, Dimensions of resistance and gravitational constant physics, Difference between systematic error and random error MDCAT. Let us start with the online MDCAT Physics Measurement MCQs now.

Results

#1. The least count of a stopwatch is 0.10sec. The time of 20 vibrations of a pendulum is 40sec. The maximum possible percentage uncertainty in the time period is

0.001

0.016

0.005

0.25

#2. The dimensions of $frac{1}{2} at^2$ are of

Time

Acceleration

Velocity

Length

#3. The value of acceleration due to gravity is $9.8m/s^2$. Its value in $Km/min^2$ will be

35.3

5.9

58.8

17.6

#4. 99.97 rounded off to three significant figures would give

99.0

$1.00\times10^2$

99.9

Cannot be rounded off in three

#5. The distance $x=x_2-x_1$ determined by the difference between two separate position measurements $X_1=12.2\pm0.2cm$ and $X_2=16.2\pm0.1cm$ is recorded as

$4.0\pm 0.2cm$

$4.0 \pm 0.4cm$

$4.0\pm 0.3cm$

$4.0 \pm 0.1cm$

#6. Three students measured the length of the same needle. Student A measured with a micrometer screw gauge, B with vernier callipers, and C with a meter rod. Which would have greater experimental accuracy in

All have same experimental accuracy

Student B

Student A

Student C

#7. Accuracy of measurement is determined by

Percentage error

Noneo f these

Absolute error

Both Absolute and Percentage Error

#8. The most accurate measurement out of the following is

2.0cm

2.00cm

2cm

2.000cm

#9. Out of the following pairs, which one does not have identical dimensions

Impulse and momentum

Work and torque

Angular momentum and Planck's constant

Moment of inertia and moment of force

#10. The unit of percentage error is

Same as that of physical quantity

Errors have got their own units which are different from that of physical quantity measured

Different from that of physical quantity

Percentage error is unit less

#11. If the length of rod A is $3.25\pm 0.01 cm$ and that of B is $4.19\pm 0.01 cm$, then rod B is longer than rod A by

$0.94 \pm0.02cm$

$0.94 \pm0.01cm$

$0.94 \pm0.005cm$

$0.94 \pm0.00cm$

#12. To reduce the timing uncertainty it is advisable to

Count for larger number of swing

Count for smaller number of swing

Use a stopwatch which is less sensitive

Both Count for smaller and larger number of swings

#13. The physical quantities not having the same dimensions are

Momentum and Planck's constant

Speed and $(\mu_0\varepsilon_0)^{-1/2}$

Stress and Young's modules

Torque and work

#14. Which of the following are base units of pressure?

$Kg m^2s^{-2}$

$Kg m{-1}s^{-2}$

$Kg ms^{-1}$

$Kg m^{-2}s^{-1}$

#15. $v=\sqrt{\frac{E}{\rho}}$, if percentage uncertainty in $v=2$% and in $\rho=4$% then percentage uncertainty in $E$ is

10%

#16. Which one of the following about systematic error is incorrect?

It influences all the measurement of a physical quantity equally

It produces consistent difference in reading

It can be reduced by comparing the instrument with standard instrument

It always occurs due to incorrect marking

#17. While measuring the acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 1.5% in the value of the time period. His percentage error in the measurement of $g$ by the relation $g=4\pi^2 (I/T^2)$ will be

10%

#18. If $M$ is the mass of Earth and R its Radium, the ratio of the gravitational acceleration to the gravitational constant is

$MR^2$

$\frac{M}{R}$

$\frac{R^2}{M}$

$\frac{M}{R^2}$

#19. The dimension of resistance is

$[ML^{-1}T^{-3}A]$

$[M^2L^{-1}T^{-1}A]$

$[ML^{-1}T^{-1}A^2]$

$[ML^{2}T^{-3}A^{-2}]$

#20. Which of the followings measurement is more accurate? $M_1=1.0cm \pm 0.1cm$, $M_2=0.10cm \pm 0.01cm$, and $M_3=0.100cm \pm 0.001cm$

$M_1$

$M_2$

$M_3$

All have same accuracy

Finish

Online High-Yield MDCAT Physics Measurement MCQs

While measuring the acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 1.5% in the value of the time period. His percentage error in the measurement of $g$ by the relation $g=4\pi^2 (I/T^2)$ will be
The dimensions of $\frac{1}{2} at^2$ are of
The value of acceleration due to gravity is $9.8m/s^2$. Its value in $Km/min^2$ will be
If the length of rod A is $3.25\pm 0.01 cm$ and that of B is $4.19\pm 0.01 cm$, then rod B is longer than rod A by
If $M$ is the mass of Earth and R its Radium, the ratio of the gravitational acceleration to the gravitational constant is
The dimension of resistance is
The least count of a stopwatch is 0.10sec. The time of 20 vibrations of a pendulum is 40sec. The maximum possible percentage uncertainty in the time period is
Accuracy of measurement is determined by
The unit of percentage error is
The most accurate measurement out of the following is
Out of the following pairs, which one does not have identical dimensions
$v=\sqrt{\frac{E}{\rho}}$, if percentage uncertainty in $v=2$% and in $\rho=4$% then percentage uncertainty in $E$ is
The physical quantities not having the same dimensions are
To reduce the timing uncertainty, it is advisable to
Which one of the following about systematic error is incorrect?
99.97 rounded off to three significant figures would give
Which of the followings measurements is more accurate? $M_1=1.0cm \pm 0.1cm$, $M_2=0.10cm \pm 0.01cm$, and $M_3=0.100cm \pm 0.001cm$
The distance $x=x_2-x_1$ determined by the difference between two separate position measurements $X_1=12.2\pm0.2cm$ and $X_2=16.2\pm0.1cm$ is recorded as
Three students measured the length of the same needle. Student A measured with a micrometer screw gauge, B with vernier callipers, and C with a meter rod. Which would have greater experimental accuracy in the result?
Which of the following are base units of pressure?

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