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JEE MAIN 2021
27-07-2021 - S2
Question
Consider the following statements :
A. Atoms of each element emit characteristics spectrum.
B. According to Bohr’s Postulate, an electron in a hydrogen atom, revolves in a certain stationary orbit.
C. The density of nuclear matter depends on the size of the nucleus.
D. A free neutron is stable but a free proton decay is possible.
E. Radioactivity is an indication of the instability of nuclei.
Choose the correct answer from the options given below :
Select the correct option:
A
A, B C, D and E
B
A, B and E only
C
B and D only
D
A, C and E only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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JEE Main
Physics
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