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COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
What is the frequency ' $\nu$ ' of the electron in Bohr's first orbit of radius ' $r$ ' of the hydrogen atom?
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
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To get 300 MW electric power for half an hour, how much mass is to be completely converted into energy?
3
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Fusion reaction is more energetic than fission reaction because
4
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
The nucleus of oxygen atom contains 8 protons and 8 neutrons. What is the mass defect in amu?
[Given Mass of proton $=1.00727 \mathrm{amu}$ Mass of neutron $=1.00866 \mathrm{amu}$ and the mass of oxygen nucleus $=15.99053 \mathrm{amu}$. ]
Questions Asked from Atoms and Nuclei (MCQ (Single Correct Answer))
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