The Nordic countries have the highest representation of women in their national parliaments due to progressive policies, gender equality measures, and quotas ensuring women’s active participation in politics.
We do not clean natural ponds or lakes, whereas an aquarium or a swimming pool needs to be cleaned regularly. Why?
Give reasons:
(i) The sky appears dark to passengers flying at very high altitudes.
At very high altitudes, passengers are above the atmosphere where there is less scattering of sunlight. As a result, they do not see the scattered blue light and the sky appears dark, similar to the condition experienced by astronauts in space.
(ii) 'Danger' signal lights are red in color.
Express refractive index of Medium 2 with respect to Medium 1 in terms of speed of light in two media.
State reason of bending of the refracted ray away from the normal.