The graph shows the relation between light intensity and the giving off and taking up of carbon dioxide by the leaves of a plant. Why is most carbon dioxide given off when the light intensity is zero units.

When do the desert plants take up carbon dioxide ?

When limestone is heated, carbon dioxide is given off. This operation in metallurgy is known as:

The graph showing the dependence of intensity transmitted light on the angle between polariser are analyser, is

The graph showing the dependence of intensity of transmitted light on the angle between polariser and analyser is

Which of the following graphs shows relation between maximum K.E. and intensity I of incident light of photocell ?

The spherical surface of a plano-convex lens comes into contact with a glass plate. The space between the lens and the plate is filled up with carbon dioxide. The refractive indies of the lens, carbon dioxide, and the plate are equal to n_(1) = 1.50, n_(2) = 1.63 , and n_(3) = 1.70 respectively. the curvature radius of the spherical surface of the lens is equal to R = 100 cm . Determine the radius of the fifth dark Newton's ring in reflected light with wavelength lambda = 0.50 mu m .