Question

The dimensional formula for the power of a lens is

• A. $\left[L^{-1}{M}^{\circ }{T}^{\circ }\right]$
• B. $\left[L^{\circ }{M}^{-1}{T}^{\circ }\right]$
• C. $\left[L^{\circ }{M}^{\circ }{T}^{-1}\right]$
• D. $\left[L^{\circ }{M}^{\circ }{T}^{\circ }\right]$
• E. $\left[L^{-1}{M}^{\circ }{T}^{-1}\right]$

Answer 1

Answer: (A)

Correct answer is (a) $\left[L^{-1}{M}^{\circ }{T}^{\circ }\right]$