Q. The stopping potential $(V_{0})$ versus frequency $(v)$ plot of a substance is shown in figure the threshold wave length is
A) $5 \times 10^{14}m$
B) $6000\ \mathring{\mathrm{A}}$
C) $5000\ \mathring{\mathrm{A}}$
D) Cannot be estimated from given data
Explanation
(b) $\lambda_{0} = \frac{c}{v_{0}} = \frac{3 \times 10^{8}}{5 \times 10^{14}} = 6 \times 10^{- 7}m = 6000\ \mathring{\mathrm{A}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.