Q144 / 160 · AP EAMCET 2023 (18 May Shift 2) · Physics

Among the following the charge that does not exist on any type of charged body is

  • A
    $3.2 \times 10^{-19} \mathrm{C}$
  • B
    $6.4 \times 10^{-19} \mathrm{C}$
  • Correct answer
    C
    $9.6 \times 10^{-20} \mathrm{C}$
  • D
    $9.6 \times 10^{-18} \mathrm{C}$

Solution

Charge on any body must be an integral multiple of charge on an electron or proton, i.e., charge is quantized, $\mathrm{Q}=$ ne If $Q=9.6 \times 10^{-20}$ than, $\mathrm{n}=\frac{\mathrm{Q}}{\mathrm{e}}=\frac{9.6 \times 10^{-20}}{1.6 \times 10^{-19}}=0.6$ It is not a number, thus this charge does not exists.

Hence, the correct answer is option: 'C'.

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