TG EAPCET 2024 (Online) 10th May Morning Shift | Dual Nature of Radiation Question 5 | Physics

The de-Broglie wavelength of a proton is twice the de-Broglie wavelength of an alpha particle. The ratio of the kinetic energies of the proton and the alpha particle is

$1: 1$

$1: 4$

$1: 2$

$1: 8$

TG EAPCET 2024 (Online) 9th May Evening Shift

MCQ (Single Correct Answer)

-0

If the de-Broglie wavelength of a neutron at a temperature of $77^{\circ} \mathrm{C}$ is $\lambda$, then the de-Broglie wavelength of the neutron at a temperature of $1127^{\circ} \mathrm{C}$ is

$\frac{\lambda}{2}$

$\frac{\lambda}{3}$

$\frac{\lambda}{4}$

$\frac{\lambda}{9}$

TG EAPCET 2024 (Online) 9th May Morning Shift

MCQ (Single Correct Answer)

-0

If Planck's constant is $6.63 \times 10^{-34} \mathrm{Js}$, then the slope of a graph drawn between cut-off voltage and frequency of incident light in a photoelectric experiment is

$414 \times 10^{-15}$ Vs

$19.776 \times 10^{-15} \mathrm{Vs}$

$2.198 \times 10^{-15} \mathrm{Vs}$

$1.337 \times 10^{-15}$ Vs

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

The additional energy that should be given to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is

four times initial energy

thrice the initial energy

equal to the initial energy

twice the initial energy

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