Question

If error in measurement of mass and velocity of a particle is $10$% and $20$% respectively, then maximum error in its momentum is

• A. $36$%
• B. $30$%
• C. $20$%
• D. $32$%

Answer 1

The correct option is D $32$%

$P_1=m\times v$
$P_2=(m\times 1.1)\times (v\times 1.2)=1.32mv$
$\therefore 32$% error