Forces and nature,

Scattering, why is the sky blue?

why is the sky blue?

Scientific activity, the factors which decide the broad area of scientific ...

the factors which decide the broad area of scientific activity ?

Phenomenon of photoelectric effect?, A radiation of 500nm is incident on a ...

A radiation of 500nm is incident on a metal surface whose work function is 3ev.why do we not observe the phenomenon of photoelectric effect? Ans) Because the energy of radiation i

Luxon, luxon: A particle which solely travels at c (the speed of light...

luxon: A particle which solely travels at c (the speed of light in vacuum). All of the luxons have a rest mass of zero exactly. Though they are massless, luxons carry momentum

Measurement of temperature, are thermo-electric thermometres fairly sensit...

are thermo-electric thermometres fairly sensitive ?

Internal energy of a system, What occures to Internal Energy of a system ,i...

What occures to Internal Energy of a system ,if work is done (a) on the system, (b) by the system.

Calculate the emf induced between the ends of the wings, Q. An aircraft hav...

Q. An aircraft having awing span of 10 m flies at a speed of 720 kmph. If the vertical component of the earth's magnetic field is 3 X 10 -5 T, calculate the emf induced between th

Voltages relative to earth, Voltages relative to earth It is very commo...

Voltages relative to earth It is very common in electrical circuits to have an earth connection. This earth connection has no effect on potential differences across components

Calculate the magnifying power of the microscope, Q. A person with a normal...

Q. A person with a normal near point (25cm) using a compound microscope with objective of focal length 8.0mmandan eye piece of focal length 2.5cm can bring an object placed at 9.0m