Embibe Experts Solutions for Chapter: Solved Physics Paper-1, Exercise 1: Exercise-Choice

Explain the working of LED.

Give de-Broglie’s explanation of Bohr’s second postulate.

Draw a typical hysteresis loop for a ferromagnetic material. Mark coercive fields in it.

Find the potential difference through which an electron be accelerated so that its de Broglie wavelength becomes $0.1227 \mathrm{nm}$.

Write any two limitations of Bohr’s atomic model.

Describe coil and magnetic experiments to demonstrate the phenomenon of electromagnetic induction.

Write any three differences between nuclear fission and nuclear fusion.

Explain the Zener diode used as a voltage regulator.