Measurement MCQs for MDCAT Practice

Physics section, Measurement chapter. Sample questions from past PMC papers.

1. Question 1
   The only pakistani scientist who recieved noble prize in physcis is
   • A.Prof. Abdus Salam
   • B.Dr. Munir Ahmed
   • C.Dr. Abdul Qadeer Khan
   • D.Dr. Munir Ahmed Khan
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2. Question 2
   The multiplication product of 20.21 with 20.22 upto four significant figures is
   • A.408.6
   • B.408.64
   • C.408.6462
   • D.409.0
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3. Question 3
   Which expression could be correct for the velocity v of ocean waves in terms of p the density of seawater, g the acceleration of free fall, h the depth of the ocean and λ the wavelength?
   • A.√gλ
   • B.√g/h
   • C.√pgh
   • D.√g/p
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4. Question 4
   The systematic error may occur due to: I. Zero error of an instrument. II. Poor calibration of an instrument. III. Incorrect measurement technique
   • A.I only
   • B.I and II only
   • C.II only
   • D.II and III only
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5. Question 5
   A value for the acceleration of free fall on Earth is given as (10+-2) m s-2. Which statement is correct?
   • A.The value is accurate but not precise
   • B.The value is both accurate and precise.
   • C.The value is neither precise nor accurate.
   • D.The value is precise but not accurate.
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6. Question 6
   The dimensions of velocity are:
   • A.LT
   • B.LT-1
   • C.LT-2
   • D.L2T-1
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7. Question 7
   In an experiment the width w and the thickness x of a metre rule to be measured as precisely as possible using normal laboratory apparatus which combination of instruments is most appropriate for these measurements?
   • A.A. Vernier calipers for both width and thickness
   • B.B. Ruler for width and micrometer for thickness
   • C.C. Micrometer for width and ruler for thickness
   • D.D. Ruler for both width and thickness
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8. Question 8
   In the SI system of units, the fundamental units of length, mass, and time are ____, _____ and _____ respectively:
   • A.Meter, Kilogram, and Kilo second
   • B.Kilometre, Kilogram, and Hour
   • C.Meter, Kilogram, and Second
   • D.Centimetre, Centigram, and Second
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