Question

3. The refraction index
of water is 4
The speed of light in
water is ( )
A2.25 x10^8m/s B) 2x10^8m/s
C) 3x10^8m/s
D)1.90x10^8 m^s​

Answer 1

Answer:

2.25 ×10^8m/s B) 2×10^8m/s