The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap in (eV) for the semiconductor is
The capacity of a parallel plate air capacitor is 2 μF and voltage between the plates is changing at the rate of 3 V/S. The displacement current in the capacitor is |
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Assertion : The energy (E) and momentum (p) of a photon are related by p = E/c. |
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Arrange the following electromagnetic radiations per quantum in the order of increasing energy: A : Blue light |
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Electromagnetic radiation used to sterilize milk is |
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Infrared radiation was discovered in 1800 by |
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In electromagnetic wave, according to Maxwell, changing electric field gives |
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The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is : |
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Absorption of X–Rays is maximum in which one of the following material sheets of the same thickness? |
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Electromagnetic wave consists of periodically oscillating electric and magnetic vectors ______. |
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The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap in (eV) for the semiconductor is |
Answer |