What does it mean when white light is diffracted and at a particular location the color seen is blue

It is because every color is dissapered from your vision but excep blue.

Explanation:

For exaple, if you turn of the light at noght then u will only see black because every color is gone except black.Like that blue appears becasue every color is gone except blue

I hope it did help you!have a nice day!

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.