## MDCAT Preparation MCQs Measurements F.Sc 1st years MDCAT Preparation MCQs Measurements F.Sc 1st Year

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## MDCAT Preparation MCQs Measurements F.Sc 1st years

1. The branch of physics which deals with matter comprising of ions and electrons at very high temperature and pressure is:

(a) Plasma Physics

(b) Fluid Dynamics

(c) Mechanics

(d) Heat

2. The fundamental of physical quantities forming the basis of the SI System are:

(a) Mass, force, time

(b) Mass, energy, time

(c) Force, weight, time

(d) Mass, length, time

3. Which of the following system of units is not based on the units of mass, length and time alone?

(a) FPS

(b) SI

(c) CGS

(d) MKS

4. Which of the following is not a unit of energy?

(a) Kilowatt

(b) erg

(c) Joule

(d) Kilowatt hour

5. Which of the following is a derived quantity?

(a) Mass

(b) Velocity

(c) Length

(d) Time

6. Which of the following is not assignable error?

(a) Personal error

(b) Random error

(c) Systematic error

(d) Instrumental error

7. Which of the following is not unit of length?

(a) Yard

(b) Angstrom

(c) Hand

(d) Slug

8. Which of the following is unit of mass?

(a) Light year

(b) Slug

(c) Candela

(d) Solar day

9. Steradian is the unity of:

(a) Plane angle

(b) Solid angle

(c) Base quantities

(d) Derived quantities

10. Which of the following quantities has a unit that can be expressed in terms of just two difference SI base units?

(a) Area

(b) Charge

(c) Current

(d) Force

11. If P is the momentum of an object of mass m, the expression (p2/2m) has base units identical to:

(a) Energy

(b) Force

(c) Power

(d) Velocity

12. By increasing the number of observation in an experiment, the error in measurement:

(a) Increase

(b) Decrease

(c) Remains Same

(d) Cannot tell

13. The least count of an instrument is 0.01 cm. Taking all precautions, the most possible error in the measurement can be:

(a) 0.02 cm

(b) 0.01 cm

(c) 0.005 cm

(d) 0.001 cm

14. The least count of the meter rod is 0.1 cm. What is the permissible error in the length of the rod measured with it?

(a) ±0.1 cm

(b) ±0.2 cm

(c) ±0.05 cm

(d) ±0.01 cm

15. The length of the rod is measured with a rod calibrated in millimeters. Which of the following is the correct expression for length, keeping in view the experimental error:

(a) (20.0 ± 0.5) cm

(b) (20.0 ± 0.1) cm

(c) (20.00 ± 0.05) cm

(d) (20.00 ± 0.01) cm

16. Error in the measurement of radius of sphere is 1%. The error in the calculated value of its volume is:

(a) 7%

(b) 5%

(c) 3%

(d) 1%

17. The percentage error in the measurement of mass and speed and 2% and 3%, respectively. The maximum error in the calculation of K.E will be:

(a) 1%

(b) 5%

(c) 8%

(d) 11%

18. In multiplication and division of measurement:

(a) Percentage uncertainties are added up

(b) Absolute uncertainties are added up

(c) Percentage uncertainties are divided

(d) Absolute uncertainties are divided

19. Zero error is the example of:

(a) Personal error

(b) Random error

(c) Systematic error

(d) None of these

20. Poor calibration is the example of:

(a) Personal error

(b) Random error

(c) Systematic error

(d) Error

21. The diameter of a cylinder is measured with vernier calipers having least count of 0.01 cm. The diameter is 1.95 cm. The radius to the correct significant figures will be:

(a) 0.975 cm

(b) 0.98 cm

(c) 1.0 cm

(d) 1 cm

22. The unit of energy is ______ and its unit symbol is:

(a) Joule, j

(b) joule, J

(c) Joule, J

(d) joule, j

23. Absolute uncertainty in a measurement depends upon:

(a) Magnitude of measurement

(b) Least count of the instrument

(c) Percentage error in measurement

(d) All of these

24. The dimension of “light year” are:

(a) [LT-1]

(b) [T]

(c) [ML2 T-2]

(d) [L]

25. The angular frequency is measured in rad s-1. Its dimensions in length are:

(a) -2

(b) -1

(c) 0

(d) 2

26. The dimensions of angular frequency are the same as that of:

(a) Angle

(b) Angle/Frequency

(c) Frequency

(d) Time Period

27. Which of the following pairs has same dimensions?

(a) Pressure, Density

(b) Impulse, Momentum

(c) Stress, Strain

(d) Momentum, Inertia

28. The S.I unit of solid angle is

(a) Degree

(d) Candela

29. Number of significant figures in 0.0173 is

(a) 3

(b) 4

(c) 5

(d) 2

30. Which is not a base unit in S.I unit

(a) Kilogram

(b) Joule

(c) Ampere

(d) Kelvin

31. Total base quantities are

(a) 9

(b) 7

(c) 3

(d) None of these

32. Which of the following is vector quantity?

(a) Power

(b) Inertia

(c) Entropy

(d) Tension

33. The branch of physics which deals with the ultimate particles of which the matter is composed is:

(a) Plasma Physics

(b) Atomic Physics

(c) Nuclear Physics

(d) Particle Physics

34. Which of the following is least multiple:

(a) pico

(b) femto

(c) nano

(d) atto

35. The sum of three numbers, 2.7543, 4.10 and 1.273, upto correct decimal place is:

(a) 8.12

(b) 8.13

(c) 8.1273

(d) 8.127