Question

1.why is energy spactcum produces by an excited atom discontinuous in nature
2.how can the flying of a bird be explained on the basis of third law.​

Answer 1

Answer:

1.If an electron is excited to a new energy level, it jumps to that level instantaneously. ... Hence, atomic emission spectra represent the electrons returning to lower energy levels. Each packet of energy corresponds to a line in the atomic spectrum. There is nothing between each line, so the spectrum is discontinuous.

2.The flying of a bird is based on action and reaction force that is on Newton's third law. While flying, the bird pushes the air down with its wings to get an equal and opposite reaction in the upward direction, which helps the bird in going up.

Explanation: Hope this helps.