1
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following statement is wrong regarding the photo electric effect.
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
A particle of mass $M$ at rest decays into masses $m_1$ and $m_2$ with non-zero velocities. The ratio of de Broglie wavelengths $\lambda_1$ and $\lambda_2$ of the particles is
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Emission of electrons from a metal plate illuminated with monochromatic electromagnetic radiation will always take place provided
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0
A photon emitted during the de-excitation of electron from a state $$\mathrm{n}$$ to the second excited state in a hydrogen atom, irradiates a metallic electrode of work function $$0.5 \mathrm{~eV}$$, in a photocell, with a stopping voltage of $$0.47 \mathrm{~V}$$. Obtain the value of quantum number of the state '$$n$$'.
Questions Asked from Dual Nature of Radiation (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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