Question

The intercept made by the plane $r.n=q$ on the x=axis is equal to

• A. $q/(i.n)$
• B. $(i.n)/q$
• C. $q(i.n)$
• D. None of these

Answer 1

The correct option is A $q/(i.n)$

eq of plane

$r\cdot n=q$

here eq of plane in intercept form

$\frac{x}{a}+\frac{y}{b}+\frac{z}{c}=1$

where a,b,c are intercept on coordinate axis

SO q is find by dot product

$q=coordintesintercept\cdot n$

$intercept=\frac{q}{\hat{i}\cdot n}$