Link provided in other answer is a SCAM, don’t click on the link !!!!
Heat cause domains of magnets atoms to lose alignment
52,200m/min bro. Hope this is the right answer
Answer:
Speed of lighter ball is 4 m/s.
Explanation:
Applying the principle of conservation of linear momentum,
momentum before collision = momentum after collision.

+
= 
- 

= 3 kg,
= 8 m/s,
= 2 kg,
= 0 m/s ( since it is at rest),
= 2 m/s,
= ?
(3 x 8) + (2 x 0) = (8 x 2) - (2 x
)
24 + 0 = 16 - 2
2
= 16 - 24
2
= -8
= 
= -4 m/s
This implies that the light ball moves at the speed of 4 m/s in the opposite direction of the heavier ball after collision.
when the reflected rays of the mirror meets
Explanation:
When two incident rays go and strike to the mirror, their reflected rays meet and image is formed