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Answer the following.
Show that radius ( ) of the Bohr orbit varies directly with square of the principal quantum number…
(a)[2.5]
Show that radius ($r_n$) of the $n^{\text{th}}$ Bohr orbit varies directly with square of the principal quantum number ($n$) of the orbit.
(b)[2.5]
(1) Where does nuclear fusion reaction take place continuously in the Universe?
(2) What is meant by “Mass defect” of a nucleus?
Answer
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From ISC 2025 Physics Paper 1, question 19(i).