An unknown nucleus collides with a ^4He nucleus, and after the co… - Vidyadip

MCQ

An unknown nucleus collides with a ${}^4He$ nucleus, and after the collision the two nuclei travel in perpendicular directions relative to each other. If kinetic energy is lost in the collision, the unknown nucleus must be

A
${}^{28}N$
B
${}^4He$
C
${}^{12}C$
✓
a nucleus with mass lighter than ${}^4He$

✓

Answer

Correct option: D.

a nucleus with mass lighter than ${}^4He$

d
The two nuclei travel in perpendicular directions relative to each other when

$\mathrm{m}_{2}=\frac{\mathrm{m}_{1}}{\mathrm{e}}$

$e<1$

$m_{2}>m_{1}$

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