Science

Hi,
In physics, a standing wave also known as a stationary wave is a wave in a medium in which each point on the axis of the wave has an associated constant amplitude. The locations at which the amplitude is minimum are called nodes, and the locations where the amplitude is maximum are called antinodes.

Hi Amaya,
The SI unit of frequency is the hertz (Hz), named after the German physicist Heinrich Hertz. One hertz means that an event repeats once per second. A previous name for this unit was cycles per second (cps). The SI unit for period is the second.
All the best.

Hi Sachin,
You need to sign up at the website to fill up the form, which is already available.
You can check the below mentioned link:
https://admissions.jnu.ac.in/Instruction.htm#jnu:Registration
All the best.

There is no entrance exam for M.Sc Zoology. Apply online while admissions are open. Hope my answer helped.