C
The wavelength of the light produced by the laser is determined by the Composition of the active medium
Explanation:
As stipulated by Bohr's theory, different atoms have different and unique absorption and emission spectra that can also be used to identify them. The electrons of the atoms when excited (the enter an inversion state), using specific photons of electromagnetic waves, they move up energy levels. When the electrons move back to their ground state, they release the same wavelength of photons. The photos then excite other atoms and the amplification continues. Therefore the lasing medium is the main determinant of the wavelength of the laser beam.
For example, the use of argon fluoride as an active medium produces lasers of 193 nm in wavelength and the use of nitrogen produces laser of
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By doing this he increases the time due to which the rate of change momnetemdecreases. that means the ball comes to rest gently and does not hurt the fielder. but, if does not move his hand backwards, then the ball would come to rest in a fraction of second with a high rate of change of momentum. the ball will exert a lot of force on the hands of the fielder which will hurt him.
The "Temperature" scale has a single "anchor" point at the triple point of water.
In short, Your Answer would be "Temperature"
Hope this helps!
<span>Commutator
is the moving part of the electric motor and periodically reverses the current
direction between the rotor and the external circuit.One end of the coil is
attached to each half of the commutator.
Commutator are used so when electricity flows through the circuit, the
coil will rotate continually in the same direction.</span>
The answer will be c
speed is equals to distance over time
