NCERT Solutions for Class 11 Science Properties of matter 1
Important Board Questions
Dimension and Measurement
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Numerical And Long Questions
A calorie is a unit of heat or energy and it equals 4.2 J where 1J = 1 kg m²s⁻². Suppose we employ a system of units in which unit of mass is α kg, unit of length is β m, unit of time γs. What will be magnitude of calorie in terms of this new system.
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n₂ = n₁ [M₁/ M₂]ᵅ (L₁/ L₂)ᵇ (T₁/ T₂)ᶜ
= 4.2 ( kg/αkg)¹ (m/βm)² (s/γs)⁻²
n₂ = 4.2 α^(-1) β⁻² γ⁻²