The only taxonomic category that has a real existence is...

In $\triangle ABC$,$(a+b+c)\left(\tan \frac{A}{2}+\tan \frac{B}{2}\right)$ is equal to

In the following arrangement,$y = 1.0 \, mm$,$d = 0.24 \, mm$,and $D = 1.2 \, m$. The work function of the material of the emitter is $2.2 \, eV$. The stopping potential $V$ needed to stop the photocurrent will be....$V$

If $x^2+px+1$ is a factor of the expression $ax^3+bx+c$,then

Which of the following statements is not correct?

Identify the mixture that shows positive deviation from Raoult's law.