Embibe Experts Solutions for Exercise 4: Assignment

Which of the following units is/are unit of time?

A dimensionless quantity

Which of the following functions of $A$ and $B$ cannot be performed if $A$ and $B$ possess different dimensions?

The equation of a stationary wave is
$y=2A\sin \left(\frac{2\pi ct}{\lambda }\right)\cos \left(\frac{2\pi x}{\lambda }\right).$
Which of the following is correct?

A dimensionless quantity $y$ is represented by the formula $y=\frac{a-bc}{d+e}.$ Which of following is/are correct?

Let $y=A\sin (\omega t-kx)$ represents the variation of displacement $y$ of a particle with time $t.$ Which of the following is not meaningful?

The radius of a spherical ball is $10.4\pm 0.4 \mathrm{cm}.$ Select the correct alternative.

A voltmeter has a least count of $0.1 \mathrm{V}$ and an ammeter has a least count of $0.1 \mathrm{A}.$ The potential drop $\mathrm{V}$ across a resistance is measured as $10.0 \mathrm{V}$ and current through it is measured as $1.0 \mathrm{A}.$ Select the correct alternative.