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

A toroid having a square cross-section, $5.00 \mathrm{cm}$ on a side, and an inner radius of $19.0 \mathrm{cm}$ has $460$ turns and carries a current of $0.400 \mathrm{A}$ . (It is made up of a square solenoid-instead of round one as in figure bent into a doughnut shape). What is the magnetic field inside the toroid at (a) the inner radius and

(b) the outer radius?

Electromagnetic spectrum is commonly classified as gamma rays, X-rays, UV-rays, visible light, IR-rays, etc. Mention very briefly two special features of any three of these, with respect to their production (source) and properties.

Explain the working of LED.

Explain Young's double slit experiment set up and obtain the equation for the path difference.

What is emission spectra? Give their types.

You are given two circuits as shown, which consist of NAND gates. Identify the logic operation carried out by the two circuits.

Describe with the help of a neat circuit diagram how will you determine the internal resistance of a cell by using potentiometer. Derive the necessary formula.

In a potentiometer experiment, the balancing length for cell of emf $1.25 \mathrm{V}$ is $4.25 \mathrm{m}$. The balancing length with another cell is obtained at $6.80 \mathrm{m}$. Determine the emf of cell.