Physics Spl

The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This is called an electric arc.
Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England.
In 1877, the American Charles Francis Brush manufactured some carbon arcs to light a public square in Cleveland, Ohio, USA. These arcs were used on a few streets, in a few large office buildings, and even some stores. Electric lights were only used by a few people.
The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.
Lewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.
In 1903, Willis R. Whitney invented a treatment for the filament so that it wouldn't darken the inside of the bulb as it glowed. In 1910, William David Coolidge (1873-1975) invented a tungsten filament which lasted even longer than the older filaments. The incandescent bulb revolutionized the world.

Hi,
There are several options for B.Sc in Physics if and only if you choose to pursue higher study. Otherwise mere graduate degree is just sufficient for couple of govt. jobs. Anyway coming back to the point
You can apply for JAM (55% is minimum required in B.Sc for applying in JAM) and can go for a master degree from any IITs. Not only in Physics but also you can apply for Energy science. However if these are the pros then the cons are that even M.Sc in Physics is not enough to get a job from IITs.
Its very bitter truth that once you land yourself in general science stream, the only way to survive is higher study. Although it is not always possible for every student due to several valid reasons but I would strictly advice you to go for PhD.
During your Masters you should apply for internship in reputed and premiere institutes in India and abroad. This will add another feather in your resume and also can help you to apply for PhD in that institute later some time.
Nowadays AICTE has some bizarre rules for selecting faculties in any institute. So, if you dont have any other options then only change your stream else continue the same flow.