VITEEE 2024 | Dual Nature of Radiation Question 1 | Physics

A metal surface is illuminated with photons of energies $E_1=4 \mathrm{eV}$ and $E_2=2.5 \mathrm{eV}$ respectively. The ratio of maximum speeds of the photoelectrons in two cases is 2 . Work function of metal surface will be

2.5 eV

5 eV

4 eV

2 eV

VITEEE 2023

MCQ (Single Correct Answer)

-0

When $${ }_{92} \mathrm{U}^{235}$$ undergoes fission, $$0.1 \%$$ of its original mass is changed into energy. How much energy is released if $$5 \mathrm{Kg}$$ of $${ }_{92} \mathrm{U}^{235}$$ undergoes fission?

$$45 \times 10^{10} \mathrm{~J}$$

$$45 \times 10^{11} \mathrm{~J}$$

$$45 \times 10^{12} \mathrm{~J}$$

$$45 \times 10^{13} \mathrm{~J}$$

VITEEE 2023

MCQ (Single Correct Answer)

-0

The de-Broglie wavelength of a proton $$\left(m=1.67 \times 10^{-27} \mathrm{~kg}\right)$$ acclerated through a potential difference of $$2 \mathrm{~kV}$$ is

$$600 \mathop A\limits^o$$

$$0.636 \times 10^{-12} \mathrm{~m}$$

$$7 \mathop A\limits^o$$

$$0.63 \mathrm{~nm}$$

VITEEE 2022

MCQ (Single Correct Answer)

-0

In which of the following photoelectric effect is not observed?

Potassium

Rubidium

Magnesium

Cesium

Questions Asked from MCQ (Single Correct Answer)

VITEEE 2024 (1) VITEEE 2023 (2) VITEEE 2022 (2) VITEEE 2021 (1)

VITEEE Subjects

Aptitude

English