$A$ vector is added to an equal and opposite vector of similar nature,it forms a ........

Distinguish between a vector quantity and a scalar quantity.

Which of the following dopant is $NOT$ used in $Ge$ to obtain $n$-type semiconductor?

$A$ mosquito is moving with a velocity $\overrightarrow{v} = 0.5t^2 \hat{i} + 3t \hat{j} + 9 \hat{k} \, m/s$. What will be the direction of the mosquito after $t = 2 \, s$?

When a particle moves from point $A(2,2,3)$ to point $B(6,6,9)$,its displacement vector is

In a switching circuit, if the combination $(S_1 \land S_2)$ is connected in parallel to the combination $(S_1' \land S_2')$, then the room is lit only when