MCQ
Why was Rutherford’s atomic model unstable?
- ✓Electrons do not remain in orbit.
- BNuclei will break down.
- CThe nucleus repels electrons.
- DOrbiting electrons radiate energy.
Rutherford’s atomic model was unstable because electrons do not remain in orbit.
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$(A)$ A zener diode is connected in reverse bias, when used as a voltage regulator.
$(B)$ The potential barrier of $\mathrm{p}-\mathrm{n}$ junction lies between $0.1\, \mathrm{~V}$ to $0.3 \,\mathrm{~V}$.

(Given : nitrogen molecule weight :
$4.64 \times 10^{-26}\, kg ,$ Boltzman constant :
$1.38 \times 10^{-23}\, J / K ,$ Planck constant :
$\left.6.63 \times 10^{-34}\, J . s \right)$
