Question

Calculate the electric field due to a charge
of -8.0*10* Cat a distance of 5.0 cm
from it
Ans: -2.88X10 N/C)​

Answer 1

Explanation:

According to Snell's Law:

sin r

sin i

=

n

1

n

2

=

v

2

v

1

and Refractive Index for air is ≈1

Substituting,

1

1.5

=

v

2

3×10

8

Therefore, v

2

=

1.5

3×10

8

=2×10

8

m/s