Physics Measurements MCQs for MDCAT Prep 4

Master Chapter 1 of MDCAT Physics Measurements MCQs with this high-yield practice quiz on Measurements. Test your understanding of physical quantities, SI units, systematic and random errors, prefix multipliers, and dimensional analysis. Essential practice for pre-medical students aiming for top scores in medical entrance exams. Online Physics Measurements MCQs Quiz with Answers

 

Results

#1. Parsec is the unit of

Time

Distance

Angular acceleration

Velocity

#2. Measurements of a physical quantity may be subject to random and systematic errors. Which statement is correct?

Systematic errors can be reduced by taking the average of several measurements

Random errors are always caused by the person taking the measurement

Random errors can be reduced by taking the average of several measurements

Systematic errors cannot be reduced

#3. The smaller the least count of the instrument, the more —————- the measurement

None of these

Accurate and precise

Precise

Accurate

#4. Which one is the correct representation of the unit of pressure?

newton/ meter$^{2}$

Newton/ meter$^{2}$

Newton/ Meter$^{2}$

newton/ Meter$^{2}$

#5. The most basic quantities that can be used to describe the physical world are

Current, Temperature, Mass

Mass, Length, Time

Force, Length, Time

Temperature, Mass, Length

#6. The diameter of an atom is of the order of

$10^{-12}$

$10^{-10}$

$10^{-3}$

$10^{-14}$

#7. What is the ratio of 1 Gm/ 1 $\mu$m?

$10^{18}$

$10^{-3}$

$10^{-7}$

$10^{15}$

#8. How many femtoseconds are there in one millisecond?

$10^{9}$

$10^{-15}$

$10^{12}$

$10^{15}$

#9. A student measures the value of $g$ by a simple pendulum. He made an error of 4% in measuring the length and 1.5% in measuring the time period. The percentage uncertainty in $g$ is

8%

7%

5%

4%

#10. Random errors can be reduced by

Comparing the instrument with another more accurate one

All options

Taking mean of several measurement

Taking zero correction

#11. Which of the following has the same dimension as that of frequency (i) RC (ii) $\frac{1}{RC}$ (iii) $\sqrt{LC}$, (iv) $\frac{1}{\sqrt{LC} }$

ii & iv

iii & iv

ii & iii

i & iv

#12. Which of the following gives the sub-multiples or multiples represented by peta (P) and femto (f)?

Peta (P) $10^{-12}$, femto (f) $10^{15}$

Peta (P) $10^{-15}$, femto (f) $10^{15}$

Peta (P) $10^{15}$, femto (f) $10^{-12}$

Peta (P) $10^{15}$, femto (f) $10^{-15}$

#13. Which one is the highest power multiple?

Giga

Peta

Deca

Mega

#14. What is the ratio $\frac{atto\,\, m}{dec\,\,m}$?

$10^{-17}$

$10^{-}$

$10^{-3}$

$10^{-15}$

#15. Which of them is not a physical quantity

Kilogram

Impulse

Density

Energy

#16. The age of the universe is

$1.4\times10^{17}$ sec

$3.2\times10^{10}$ sec

$8.6\times 10^{4}$ sec

$5\times10^{17}$ sec

#17. $9.5times 10^{15}$m is equal to

Peta meter

Tera meter

Exa meter

Light year

#18. Systematic error may occur due to

Poor callibration of instrument

Incorrect marking

All of these options

Zero error of instrument

#19. Which of the given can be expressed in some units?

Relative permeability

Refractive index

Relative permittivity

Relative velocity

#20. The SI system was built up of

Derived units

Supplementary units

Base units

All of these

Previous

Finish

Online Physics Measurements MCQs for MDCAT Preparation

• What is the ratio of 1 Gm/ 1 $\mu$m?
• Measurements of a physical quantity may be subject to random and systematic errors. Which statement is correct?
• The age of the universe is
• Random errors can be reduced by
• The most basic quantities that can be used to describe the physical world are
• Which one is the correct representation of the unit of pressure?
• Systematic error may occur due to
• The smaller the least count of the instrument, the more ———— the measurement
• Which one is the highest power multiple?
• Which of the given can be expressed in some units?
• How many femtoseconds are there in one millisecond?
• Which of the following gives the sub-multiples or multiples represented by peta (P) and femto (f)?
• Which of them is not a physical quantity
• Parsec is the unit of
• Which of the following has the same dimension as that of frequency (i) RC (ii) $\frac{1}{RC}$ (iii) $\sqrt{LC}$ (iv) $\frac{1}{\sqrt{LC} }$
• A student measures the value of $g$ by a simple pendulum. He made an error of 4% in measuring the length and 1.5% in measuring the time period. The percentage uncertainty in $g$ is
• $9.5\times10^{15}$m is equal to
• What is the ratio $\frac{atto,, m}{dec,,m}$?
• The diameter of an atom is of the order of
• The SI system was built up of

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