CUET · PHYSICS · PYQ PAPER 2023
The mass number of helium is 4 and that of sulphur is 32. How many times the radius of sulphur nucleus is bigger than that of helium ?
- A 8
- B 4
- C 2
- D 2/3
Answer & Solution
Correct Answer
(C) 2
Step-by-step Solution
Detailed explanation
\(R \propto A^{1/3}\) \(\frac{R_S}{R_{He}} = \left(\frac{A_S}{A_{He}}\right)^{1/3}\) \(\frac{R_S}{R_{He}} = \left(\frac{32}{4}\right)^{1/3}\) \(\frac{R_S}{R_{He}} = (8)^{1/3}\) \(\frac{R_S}{R_{He}} = 2\)
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