Question

Light travels in air at a speed of :

(a) 3×108m/s (b) 3.5×108m/s (c) 3×1010m/s (d) 2×108m/s​

Answer 1

Answer:

(a) 3×108m/s...........................

3×10to the power of 8 m/ s

Answer 2

Answer:

In Air --> 298 m/sec

In vacuum -->

$3 \times {10}^{8} \: \: \frac{m}{sec}$