Question

ek sample data main se pivot table banane ki prakriya​

Answer 1

Explanation:

yy 9yv 9yvyfyv yv yv 9yfiyv9yv 9yf fiyyf 9yf 9y9yf 9y 9yf 9yf yv9f9yf 9y 9y 99yf 9yf 9yvf

Answer 2

Explanation:

The principle of reversibility presupposes that the attenuation of a light ray during its passage through an optical medium because of reflection, refraction, and absorption is not affected by a reversal of the direction of the ray.