Question 235: Dual Nature of Matter and Radiation

Question

If the kinetic energy of a free electron doubles, it's deBroglie wavelength changes by the factor

Accepted Answer

de-Broglie wavelength,
$$\lambda  = {h \over p} = {h \over {\sqrt {2.m,\left( {K.E} ight)} }}$$
$$	herefore$$ $$\lambda  \propto {1 \over {\sqrt {K.E} }}$$
If $$K.E$$ is doubled, wavelength becomes $${\lambda  \over {\sqrt 2 }}$$

Answer

$$2$$

Answer

$${1 \over 2}$$

Answer

$${\sqrt 2 }$$

Answer

$${1 \over {\sqrt 2 }}$$

Dual Nature of Matter and Radiation

If the kinetic energy of a free electron doubles, it's deBroglie wavelength changes by the factor

Choose the correct answer: