NCERT Exercise 1.3 - Units and Measurements
Question: A calorie is a unit of heat or energy and it equals about 4.2 J where 1 J = 1 kg m² s⁻². Suppose we employ a system of units in which the unit of mass equals α kg, the unit of length equals β m, the unit of time is γ s. Show that a calorie has a magnitude 4.2 α⁻¹ β⁻² γ² in terms of the new units.
Answer: The magnitude of a calorie in terms of new units is **4.2 α⁻¹ β⁻² γ²**.
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