- Home
- Standard 11
- Physics
1.Units, Dimensions and Measurement
medium
Which of the following quantities is dimensionless
AGravitational constant
BPlanck's constant
CPower of a convex lens
DNone
Solution
$[G] = [{M^{ – 1}}{L^3}{T^{ – 2}}];\,[h] = [M{L^2}{T^{ – 1}}]$
Power = $\frac{1}{{{\rm{focal length}}}} = [{L^{ – 1}}]$
All quantities have dimensions
Power = $\frac{1}{{{\rm{focal length}}}} = [{L^{ – 1}}]$
All quantities have dimensions
Standard 11
Physics
