Q. What is the approximate value of gravitational acceleration on Earth? (2022)
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A.
9.8 m/s²
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B.
10 m/s²
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C.
9.81 m/s²
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D.
9.6 m/s²
Solution
The approximate value of gravitational acceleration on Earth is 9.8 m/s².
Correct Answer: A — 9.8 m/s²
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Q. What is the dimensional formula for force? (2022)
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A.
[M^1 L^1 T^-2]
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B.
[M^1 L^0 T^-2]
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C.
[M^0 L^1 T^-1]
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D.
[M^1 L^2 T^0]
Solution
Force has the dimensional formula [M^1 L^1 T^-2].
Correct Answer: A — [M^1 L^1 T^-2]
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Q. What is the prefix for 10^6? (2022)
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A.
Kilo
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B.
Mega
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C.
Giga
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D.
Tera
Solution
The prefix for 10^6 is Mega (M).
Correct Answer: B — Mega
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Q. What is the standard unit of time in the SI system? (2020)
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A.
Minute
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B.
Hour
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C.
Second
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D.
Day
Solution
The standard unit of time in the SI system is the second (s).
Correct Answer: C — Second
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Q. Which of the following is a fundamental quantity? (2020)
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A.
Mass
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B.
Velocity
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C.
Force
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D.
Energy
Solution
Mass is a fundamental quantity in the SI system.
Correct Answer: A — Mass
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Q. Which of the following is the correct order of magnitude for the speed of light? (2023)
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A.
10^6 m/s
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B.
10^8 m/s
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C.
10^10 m/s
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D.
10^12 m/s
Solution
The speed of light is approximately 3 x 10^8 m/s.
Correct Answer: B — 10^8 m/s
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Q. Which of the following is the correct representation of 0.001 in scientific notation? (2023)
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A.
1 x 10^-3
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B.
1 x 10^3
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C.
1 x 10^1
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D.
1 x 10^-1
Solution
0.001 can be represented as 1 x 10^-3 in scientific notation.
Correct Answer: A — 1 x 10^-3
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