I think it’s 8 hours. I’m sorry if I’m wrong.
I just did 400 divided by 50
Answer:

Explanation:
Deflection in the drop is due to electric field force
so we will have

acceleration of the drop is given as



now we know that time to cross the plates is given as



now the deflection is given as




Answer: Gamma rays, x-rays, ultraviolet rays, visible light, and infrared rays.
Unlike acceleration and velocity, speed does not need to specify the direction of motion. Speed is a scalar quality.