Question

plz guys help........................​

Answer 1

Answer:

Hiiii

Explanation:

Ur ans is first one

I hope it will help u if yes then mark me as brainliest.

Answer 2

Answer:

option a is correct.

Explanation:

$ke = h(v - v_{0}) \\ = h( \frac{c}{ \lambda} - \frac{c}{\lambda_{0}}) \\ = hc( \frac{1}\lambda - \frac{1}{ \lambda_{0}})$

here v is the frequency.