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Physics 914 MCQs [All-Courses]

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Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas. 

All Topics  914

One pico stands for_________________?
A 10 raised to power -15
B 10 raised to power -12
C 10 raised to power -9
D 10 raised to power -6
Correct Answer: 10 raised to power -12
Which one is the highest power multiple ?
A Giga
B Beta
C Mega
D Deca
Correct Answer: Giga
Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
A Sum of their absolute uncertainties
B The difference of their absolute uncertainties
C The product of their absolute uncertainties
D Division of their absolute uncertainties
Correct Answer: Sum of their absolute uncertainties
An ideal standard of measurement of a base quantity has characteristics_______________?
A Accessible
B Invariable
C Transportable
D Only a and b are correct
Correct Answer: Only a and b are correct
Steradian is the SI unit of________________?
A Plane angle
B Solid angle
C Both plane angle and solid angle
D Neither plane angle nor solid angle
Correct Answer: Solid angle
Absolute uncertainty in a measurement depends upon______________?
A The magnitude of the measurement
B Least count of the instrument
C Percentage error in the measurement
D All of a, b and C
Correct Answer: Least count of the instrument
Three students measured the length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is a correct record ?
A Only (i)
B Only (ii)
C Only (iii)
D Both (i) and (ii)
Correct Answer: Only (iii)
SI unit of the coefficient of viscosity is___________________?
A Kg.m.S-1
B Kg m-1.S-1
C Kg.m.S
D Kg-1.m-1.S-1
Correct Answer: Kg m-1.S-1
Which equation is not dimensionally correct ?
A E=mc2
B Vf=Vi+at
C S=Vt2
D S=1/2at2
Correct Answer: S=Vt2
Dimensional analysis is helpful for__________________?
A Deriving a possible formula
B Checking the homogeneity of a physical equation
C Verification of laws
D Only A and B are correct
Correct Answer: Only A and B are correct
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