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Q1. What is the base unit of mass in the SI system? (2019)
Solution:
The base unit of mass in the SI system is the kilogram (kg).
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Q2. Which of the following units is used to measure electric current? (2021)
Solution:
The unit used to measure electric current is Ampere (A).
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Q3. Which of the following is the correct representation of the unit of energy? (2019)
Solution:
Both Joule and Newton-meter represent the same unit of energy.
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Q4. Which of the following quantities has the dimension M^0L^1T^-1? (2021)
Solution:
Velocity has the dimension M^0L^1T^-1.
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Q5. What is the dimension of work? (2022)
Solution:
The dimension of work is M^1L^2T^-2.
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Q6. The unit 'Joule' is a measure of which of the following? (2023)
Solution:
Joule is the SI unit of energy, which is also equivalent to work done.
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Q7. Which of the following quantities has no dimension? (2023)
Solution:
Angle is a dimensionless quantity.
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Q8. What is the relationship between the units of pressure in SI? (2019)
Solution:
Both statements are correct; 1 Pascal (Pa) is defined as 1 Newton per square meter.
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Q9. What is the dimension of force? (2019)
Solution:
The dimension of force is M^1L^1T^-2.
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Q10. Which of the following is a unit of frequency? (2023)
Solution:
Hertz (Hz) is the unit of frequency, defined as cycles per second.
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