Which of the following is a vector quantity?
A. Area
B. Power
C. Electric Current
D. Energy
E. None of these
Answer: Option A
Solution(By Examveda Team)
In physics, avector quantity
is a physical quantity that has both magnitude and direction. Area is an example of a vector quantity because it has both magnitude (e.g., square meters) and direction (e.g., the orientation of the area in three-dimensional space).The other options are not vector quantities:
Option B: Power is a scalar quantity because it has magnitude but no direction.
Option C: Electric Current is a scalar quantity. While it involves the motion of charged particles, it is described by magnitude only.
Option D: Energy is a scalar quantity. While energy can be associated with physical processes, it is also described by magnitude only.
Option E: None of these is not the correct answer because, as explained, Option A (Area) is indeed a vector quantity.
So, the correct answer is Option A: Area, as it is a physical quantity that possesses both magnitude and direction, which are characteristics of vector quantities.
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Comments ( 1 )
Which of the following terms is not used in the field of physics?
A. Latent heat
B. Nuclear fusion
C. Refractive index
D. Stock value
Radiocarbon is produced in the atmosphere as a result of
A. Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
B. Action of ultraviolet light from the sun on atmospheric oxygen.
C. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.
D. Lightning discharge in atmosphere.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
A. Work done in rolling is more than in lifting.
B. Work done in lifting the stone is equal to rolling it.
C. Work done in both is same but the rate of doing work is less in rolling.
D. Work done in rolling a stone is less than in lifting it.
The absorption of ink by blotting paper involves:
A. Viscosity of ink
B. Capillary action phenomenon
C. Diffusion of ink through the blotting
D. Siphon action
All of these are scaler quantity