Very short answer type questions : (To be answered in a word, a phrase or a sentence) 1. What do you mean by fundamental quantities? 2. What is a unit? 3. What is a coherent system of units? 4. State the unit of impulse in S.I.. 5. What is a dimensional formula? 6. State dimensions of work. 7. What physical quantity has dimensional formula (ML-T-21? 8. Write the dimensions of torque.
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1. Fundamental quantities are the basic or base quantities.
2. unit is called (ईकाई)
3. A coherent system of units in a system of units used to measure physical quantities.
5. Dimensional formula is the expression for the unit of a physical quantity in terms of the fundamental quantities.
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