Modern Physics Ques 89
- The work functions of silver and sodium are $4.6$ and $2.3$ $ eV$, respectively. The ratio of the slope of the stopping potential versus frequency plot for silver to that of sodium is
(2013 Adv.)
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Answer:
Correct Answer: 89.$(1)$
Solution:
Formula:
- $e V _0=h f-W$
$\therefore \quad V _0=(\frac{h}{e}) f-\frac{W}{e}$
$V _0$ versus $f$ graph is a straight line with slope $=\frac{h}{e}=a$ universal constant. Therefore, the ratio of two slopes should be 1 .
BETA
