2. DNA is found inside a special area of the cell called the nucleus
3. This is because the green plant is the primary producer by trapping energy from sunlight.
4. Absolute refractive index of glass = 4/3 = c/vg
=> 4/3 x vg = c
=> 4/3 x 2 x 10^8 = c
The speed of light in vacuum = c = 2.67 x 10^8 m/s
Absolute refractive index of water = 3/2 = c/vw
=> The speed of light in water vw = 2c/3 = 1.78 x10^8 m/s
CBSE Board paper solution 2015