1
MHT CET 2023 10th May Evening Shift
+1
-0

If the potential difference used to accelerate electrons is doubled, by what factor does the de-Broglie wavelength associated with electrons change?

A
Wavelength in increased to $$\frac{1}{\sqrt{2}}$$ times.
B
Wavelength in increased to $$\frac{1}{2}$$ times.
C
Wavelength in decreased to $$\frac{1}{\sqrt{2}}$$ times.
D
Wavelength in decreased to $$\frac{1}{2}$$ times.
2
MHT CET 2023 10th May Evening Shift
+1
-0

The maximum kinetic energy of the photoelectrons varies

A
inversely with the intensity of incident radiation and is independent of its frequency.
B
inversely with the frequency of incident radiation and is independent on its intensity.
C
linearly with the frequency of incident radiation and depends on its intensity
D
linearly with the frequency of incident radiation and is independent of its intensity.
3
MHT CET 2023 10th May Morning Shift
+1
-0

An electron accelerated through a potential difference '$$V_1$$' has a de-Broglie wavelength '$$\lambda$$'. When the potential is changed to '$$V_2$$' its de-Broglie wavelength increases by $$50 \%$$. The value of $$\left(\frac{\mathrm{V}_1}{\mathrm{~V}_2}\right)$$ is

A
$$3: 1$$
B
$$9: 4$$
C
$$3: 2$$
D
$$4: 1$$
4
MHT CET 2023 10th May Morning Shift
+1
-0

Maximum kinetic energy of photon is '$$E$$' when wavelength of incident radiation is '$$\lambda$$'. If wavelength of incident radiations is reduced to $$\frac{\lambda}{3}$$ then energy of photon becomes four times. Then work function of the metal is

A
$$\frac{3 h c}{\lambda}$$
B
$$\frac{\mathrm{hc}}{3 \lambda}$$
C
$$\frac{h c}{\lambda}$$
D
$$\frac{\mathrm{hc}}{2 \lambda}$$
EXAM MAP
Medical
NEET