Physics MCQS

791. Accuracy of a measurement depends on?
A. Least Count
B. Uncertainty
C. Absolute uncertainty
D. Average values

792. Light year is the unit of?
A. Time
B. Length
C. Speed
D. Mass

793. The SI unit of heat is?
A. Calorie
B. Horse power
C. Joule
D. Watt

794. Base quantities are?
A. Scalar
B. Vector
C. Tensors
D. Time arrow

795. Supplementary SI units radian and steradian were established to measure?
A. Geometrical quantities
B. Luminous intensity
C. Electric current
D. Temperature

796. The magnitude of a physical quantity’s numerical value is?
A. Independent of the unit system
B. Directly proportional to the unit’s magnitude
C. Inversely proportional to the unit’s magnitude
D. Independent of the unit

797. Length cannot be measured by?
A. Fermi
B. Debye
C. Micron
D. Light year

798. S.I unit of magnetic flux is?
A. Weber meter
B. Weber
C. Weber per meter
D. Weber per meter^4

799. Which of the following is not the unit of energy?
A. Calorie
B. Joule
C. Electron-volt
D. Watt

800. Minimum number of unequal forces whose vector sum can be zero are:
(A) 2
B) 3
(C) 4
(D) 5