- Home
- Standard 12
- Physics
11.Dual Nature of Radiation and matter
easy
The ratio of the energy of a photon with $\lambda = 150\,nm$ to that with $\lambda = 300\,nm$ is
A
$2$
B
$1/4$
C
$4$
D
$1/2$
Solution
(a) $E = \frac{{hc}}{\lambda }$
$\Rightarrow \frac{{{E_1}}}{{{E_2}}} = \frac{{300}}{{150}} = \frac{2}{1}$
Standard 12
Physics
Similar Questions
Match the column
| $(A)$ Hallwachs $\&$ Lenard | $(P)$ Transformers |
| $(B)$ Franck-Hertz | $(Q)$ Microwave |
| $(C)$ Klystron valve | $(R)$ Quantization of energy levels |
| $(D)$ Nicola Tesla | $(S)$ Photoelectric effect |
medium
