Which of the following is a negative environmental impact of using solar (photovoltaic) energy?

A. Interference with radar
and telecommunication facilities
B. Local ecosystem degradation through noise pollution
C. High consumption of freshwater resources
D. Large amounts of toxic radioactive waste

Please help

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

neither accurate nor precise.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.