If the band gap between valence band and conduction band in a material is 5.0 eV,
If the band gap between valence band and conduction band in a material is 5.0 eV, then the material is…
6 years ago
WB2014
A very small circular loop of radius a is initially (at t=0) coplanar and concentric
A very small circular loop of radius a is initially (at t=0) coplanar and concentric with a much larger fixed…
6 years ago
The de-Broglie wavelength of an electron is the same as that of a 50 KeV X-ray photon.
The de-Broglie wavelength of an electron is the same as that of a 50 KeV X-ray photon. The ratio of…
6 years ago
Four cells, each of emf E and internal resistance r, are connected in series across
Four cells, each of emf E and internal resistance r, are connected in series across an external resistance R. By…
6 years ago
The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released
The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released when an electron jumps from the…
6 years ago
Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
Two coherent monochromatic beams of intensities I and 4I respectively, are superposed. Then, the maximum and minimum intensities in the…
6 years ago
An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp
An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp image…
6 years ago
A glass slab consists of thin uniform layers of progressively decreasing refractive
A glass slab consists of thin uniform layers of progressively decreasing refractive indices refractive index such that the refractive index…
6 years ago