Embibe Experts Solutions for Exercise 2: Assignment

Give the SI units of solid angle and plane angle.

The magnification produced by a convex lens is $2.$ Write its value in both SI and CGS units.

Name the errors which can have both positive and negative signs.

What is the value of $1 \mathrm{J}$ in CGS units ?

How many significant figures are there in the value $163.602 ?$

What is the order of magnitude of $1$ unified a.m.u. in SI units ?

Name any three physical quantities having the same dimensions and also give their dimensions.

(i) Explain how errors combine after arithmetic operations of two measured values ?
(ii) If the heat dissipated in a resistor depends on its resistance $R,$ current $I$ through it and the time $t$ for which the current flows, find an expression for heat $H$ dissipated.