Why is the pink ball used in day night test matches, when they use a white ball in day night ODI?

Question

When bowler is bowling over the wicket and ball pitches out side off and is hitting the stumps, the LBW is given.

But when bowler is bowling around the wicket and ball pitches out side of leg but hitting the stumps then why LBW is not given.

Can any body tell me logic behind this rule?

Answer 1

Pink ball is being used in day-night test matches because it can be spoted easily under flood lights. Since the two teams will be wearing white cloths so white ball is not a good option.The most important reason for not using white is its very low endurance.It can not last 80 overs.