10. Column-I Column-II (A) P. (P) Electric potential at all points on z-axis is zero Two identical dipoles placed on x-axis at same distance from origin O (Q) Electric field at any point with z > R is directed along +z-axis (В) +. X. Uniformly charged hemispherical (R) Electric field at origin is zero. shells of radius R y (C) (S) Electric field at any point with z < 0 is X directed along negative z-axis. Ring of radius R having equal and opposite charge uniformly distributed on each half.
Stellar evolution
We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.
Red Shift
It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.
we have to match each option in column 1 with the correct option(s) in column 2
Step by step
Solved in 2 steps
