A metal wire of circular cross-section has a resistance R₁. The wire is now stretched
A metal wire of circular cross-section has a resistance R₁. The wire is now stretched without breaking, so that its…
7 years ago
WB2015
A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T.
A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T. The velocity of the conductor is…
7 years ago
A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground
A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground state. During the interaction, whole energy of…
7 years ago