Standing in the sun is more pleasant on a cold winter day than standing in shade. Is the temperature of air in the sun considerably higher than that of air in shade?

Explain why the aquatic species are more conmfortable in cold water during winter season rather than warm water during the summer.

In a Millikan-type oil-drop experiment, the plates are 8 mm apart. An oil drop is found to remain at rest when the upper plate is at a potential 136 V higher than that of the lower one. When the electric field is switched off, the drop is found to fall a distance of 2.0 mm in 36 seconds with a uniform speed. Find (a) the charge on the drop and (b) the number of electrons attached to this drop. Density of oil = 880 kg m^(-3) and coefficient of viscosity of air = 180 mupoise .

One day in 1922,the air temperature was measured at 59^@Cin the shade in Libya___.

A setting sun appears to be at an altitude higher than it really is. This is because of

Three boys and two girls stand in a queue. The probability, that the number of boys ahead is at least one more than the number of girls ahead of her, is