Jatinder Singh Solutions for Chapter: Practice Papers for Revision, Exercise 8: PRACTICE PAPER - 8

What is the SI unit of charge?

What is the SI unit of specific resistance?(ohm-metre/ohm-centimetre)

Draw a ray diagram to illustrate the action of a convex lens as magnifying glass.

An electric heater is rated $1000 \mathrm{W}-220 \mathrm{V}.$ Calculate Resistance of heating element.

How does the deflection of cathode rays by an electric field differ from the deflection by a magnetic field? Draw a diagram for them. 

What is thermionic emission? Name two factors on which thermionic emission depends.

What is Lenz's law?

How are $\gamma$-rays produced ?