Embibe Experts Solutions for Chapter: Physical World and Measurement, Exercise 1: TS EAMCET 2019 (03-May Shift-2)

Which of the following statement is incorrect?

The ratio $\left(\frac{E}{W}\right)$ of relative strength of electromagnetic force $\left(E\right)$ to weak nuclear force $\left(W\right)$ is, 

The physics behind fusion test reactor is:

Match the columns I and II

The correct match is

Consider an expression $QV=kPT{L}^{\alpha }$ where $V, P, T, L$ are volume, pressure, time, and length respectively. The quantity $\left[Q\right]$ has dimension $M{L}^{-1}{ T}^{-1}. k$ is a dimensionless constant. The value of the integer $\alpha$ is:

The dimensions of $\sigma b^4$ where $\text{'}\sigma \text{'}$ is Stefan's constant and $\text{'}b\text{'}$ is Wien's constant are

If ${\epsilon }_0$ and ${\mu }_0,$ represent the permittivity and permeability of free space respectively, then the dimension of the product ${\epsilon }_0 {\mu }_0$ is,

Consider a physical quantity, $Z$ expressed as $Z=\frac{A{B}^{\frac{1}{2}}}{C^2}.$ If the relative error in the magnitudes of $A\mathit{,} B$ and $C$ is $1\%$ then the relative error in $Z$ will be,