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Photomultiplier tube(PTM) it can detect a weak flash of light and estimate the amount of light .The principle of operation (fig(4)) a light photon released electron at the phot
Assume a hot system at temperature T placed in an environment at a lower temperature T0. The system emits more radiation than it absorbs and cools down whereas the surrounding abso
(i) It having of dissimilar bright lines. (ii) It is given by an excited source in atomic state. (iii)E.g. Spectrum of excited helium, mercury vapours sodium vapours or atomi
A dual-wavelength spectrometer uses 780 nm and 830 nm. The molar extinction coefficients for oxy-hemoglobin (HbO 2 ) and deoxy-hemoglobin (Hb) at these two wavelengths are: e_HbO 2
What do you mean by Doppler effect? Derive a mathematical expression for the apparent frequency of a note, when source of sound and observer are approaching each other.
Microwaves and Radio waves: Microwaves are produced by high frequency electromagnetic oscillators in electric circuits. Microwaves are electromagnetic waves with wavelengths i
As an electron passes close to the positive nucleus of atom, the electron is moved from its path as given in diagram. This results in deceleration of the electron. The loss in powe
infrigious system capacity of spherical conductor is equal to ...........
A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: a) constan
What is the difference between an adiabatic and an isoperibol bomb calorimeter?
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