Explain about the primary zones of a pond-water depending upon the light penetration.

The vapour pressure of water depends upon

What are the three zones of a deep lake on the basis of penetration of light.

Is the measure of angle dependent upon the unit of length? Explain.

Write in brief about the role of light, water and hormone in the growth of plants.

This question has statement I and Statement II. Of the four choices given after the statements, choose the one that best describes the two Statements. (1) Statement-I is true, Statement-II is true, Statement-II is a correct explanation of Statement-I (2) Statement-I is true, Statement-II is true,Statement-II is not a correct explanation of Statement-I (3)Statement-I is a true , Statement-II is false (4) Statement-I is false, Statement-II is true Statement 1 : Water is specially effective in screening the electrostatic interactions between the dissolved ions. Statements 2: The force of ionic interactions depends upon the dielectric constant (varepsilon) of the solvent.

When breakdown voltage of a Zener diode is around 6 V, then the value of this voltage does not depend upon temperature -Explain.

Explain the following: The water of a pond has become green and smelly and the big fish died and floated over the water.

Explain, on the basis of Rayleigh's criterion, how does the resolving power of telescope depend on wavelength of the light used?

What is meant by stopping potential in photoelectric emission? Does the stppping potential depend on the intensity and the frequency of the incident light? Explain.