Question

SECTION C (3 Maris)<br />28/100 in reflecting type telescope, objective<br />lens is replaced by convex parabolic<br />mirror. Is this statement true? Justify.<br />You can see that when it starts becoming<br />dark in the evening streetlights are ON.<br />Yellow light is used instead of white<br />Bight for streetlighting. Why?​

Answer 1

Answer:

Answer is in Attachment