VITEEE 2023 | Dual Nature of Radiation Question 5 | Physics

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)

-1

In which of the following photoelectric effect is not observed?

Potassium

Rubidium

Magnesium

Cesium

VITEEE 2022

MCQ (Single Correct Answer)

-1

Light of wavelength $$\lambda$$ strikes a photoelectric surface and electrons are ejected with kinetic energy $$K$$. If $$K$$ is to be increased to exactly twice its original value, the wavelength must be changed to $$\lambda^{\prime}$$, such that

$$\lambda^{\prime}<\lambda / 2$$

$$\lambda^{\prime}>\lambda / 2$$

$$\lambda>\lambda^{\prime}>\frac{\lambda}{2}$$

$$\lambda^{\prime}=\frac{\lambda}{2}$$

VITEEE 2021

MCQ (Single Correct Answer)

-1

Einstein's photoelectric equation is

$$E_{\max }=h v-\phi$$

$$E=m c^2$$

$$E^2=p^2 c^2+m_0^2 c^4$$

$$E=\left(\frac{1}{2}\right) m v^2$$

VITEEE Subjects

Browse all chapters by subject

Aptitude

Coding and Decoding Number Series Syllogism Data Sufficiency Data Interpretation Analogy Classification Series Completion Blood Relations Logical Deduction

English

Comprehension Ability Fill in the Blanks Vocabulary