Question

The resultant of $\underset{a}{\to }$ and $\underset{b}{\to }$ makes angle $\alpha$ with $\underset{a}{\to }$ and $\beta$ with $\underset{b}{\to }$ , then (a,b represent magnitudes of respective vectors)

• A. $\alpha <\beta$
• B. $\alpha <\beta$ if $a<b$
• C. $\alpha <\beta$ if $a>b$
• D. $\alpha <\beta$ if $a=b$

Answer 1

Answer: (C)

$\alpha <\beta$ if $a>b$

If a= b then $\alpha =\beta$

If a>b then $\alpha <\beta$

If a<b then $\alpha >\beta$