Dual Nature Of Light Question 68

Question: The ratio of specific charge of an $ \alpha $ -particle to that of a proton is [BCECE 2003]

Options:

A) 2 : 1

B) 1 : 1

C) 1 : 2

D) 1 : 3

Show Answer

Answer:

Correct Answer: C

Solution:

Specific charge $ =\frac{q}{m} $ ; Ratio $ =\frac{{{( \frac{q}{m} )}{\alpha }}}{{{( \frac{q}{m} )}{p}}}=\frac{{q_{\alpha }}}{q_{p}}\times \frac{m_{p}}{{m_{\alpha }}}=\frac{1}{2} $ .