Describe the various region of atmosphere. How e.m. radiation interact them?

Explain the physical proces on the basis of which the r.m.s value of AC is defined? Derive the expression for r.m.s value of an alternating voltage. How does the value of Capacitative voltage. How does the value of Capacitative reactance of a capacitor change with the frequecny of the applied alternating e.m.f across it.

Name the constituent radiation of e.m. spectrum which is used in satellite communication.

Name the constituent radiation of e.m. spectrum which produces intense heating effect.

Name the characteristics of e.m waves that (i) increases, (ii) remains constant as one moves from radio wave to ultraviolet regions in electromagnetic spectrum

Two particles-one of mass m1, and the other of mass m2, carry equal charges. After being accelerated through the same potential difference they enter a region of uniform magnetic field and describe circular paths of radius (r_1) , and (r_2) , respectively. Find the ratio of their masses.

Name the e.m. radiations used for studying crystal structure of solids.