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Brackett series (Brackett)
This is the series that describes the emission spectrum of hydrogen while the electron is jumping to the fourth orbital. All these lines are in the infrared portion of the spectrum. bradyon
Lead: Atomic number 82 Symbol Pb Atomic weight 207.2 Discovery Known since pr
alkaline battery
Scientific principle behind a laser: The basic scientific principle behind a laser was first put forward by Dr. Charles H. Towns in 1954 which later led to the development
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What are Switches and Fuses? As mentioned earlier, short circuits can be damaging to the voltage source. One way we have developed to protect equipment is to use fuses i
a) Three equivalent charges 2.0 micro coulomb each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Determine the Coulomb force experienced at its cent
Que: In the circumstances of charge distributed on a line segment what do we mean by the expression linear charge density λ(x)? Note that λ(x) is to be study lambda of x mea
Echo: The sound heard after reflection from an obstacle is known as echo.
State and explain laws of transverse vibrations in stretched strings. Describe how do you verify them using sonometer.
Q. Point out the direction of the current if any induced to flow in the coil by the changing magnetic field. Answer: 1. Given: declining number of magnetic field line
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