Units and Measurements
Question
Question 1 : Physical quantities are
1. quantities such as degrees, radians and steradians
2. quantities such as pounds, dollars and rupees
3. quantities such as kilos, pounds and gallons
4. quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
Answer
Correct Anaswer : 4
Explanation:
quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
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Question 2 : Which of the following pairs has the same dimensions?
1. specific heat and latent heat
2. lmpulse and momentum
3. surface tension and force
4. moment of lnertia and torque
Answer
Correct Anaswer : 2
Explanation:
lmpulse and momentum
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Question 3 : The dimensions of kinetic energy is
1. [M 2L2T]
2. [ML 2T]
3. [ML 2T-2]
4. [ML 2T-1]
Answer
Correct Anaswer : 3
Explanation:
[ML 2T-2]
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Question 4 : A force F is given by F = at + bt², where t is time. What are the dimensions of a and b?
1. MLT-3 and MLT-4
2. MLT-4 and MLT1
3. MLT-1 and MLT0
4. MLT-3 and ML2T4
Answer
Correct Anaswer : 1
Explanation:
MLT-3 and MLT-4
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Question 5 : The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?
1. 105 newton/m²
2. 106 newton/m²
3. 104 newton/m²
4. 103 newton/m²
Answer
Correct Anaswer : 1
Explanation:
105 newton/m²
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