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Q. What are emissive and absorption spectra?
Emission spectrum:
When the light emitted straight from a source is examined with a spectrometer the emission spectrum is obtained. Each source has its own characteristic emission spectrum.
Absorption spectrum:
When the light released from a source is made to pass through an absorbing material and then examined with a spectrometer absorption spectrum is obtained.
The number of electrons in an atom of an element is equal to its: (1) Atomic weight (2) Atomic number (3) Equivalent weight (4) Electron affinity Ans: Atomic weigh
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#questionwhat is dc motor ..
two insulated charge Cu spheres A and B OF IDENTICAL size have charge qa and -3qa when they are brought in contact with each other and separated,what are new charge on them
Q. (a) A giant refracting telescope at an observatory has an objective lens of focal length 15m. If an eyepiece of focal length 1.0 cm is used, what is the angular magnification o
An astronomer observes that a molecule in a galaxy travelling toward Earth emits light with a wavelength of 514 nm. The astronomer identifies the molecule as one that actually
Linear circuit :- It can be described as one, whose parameters are constant i.e. they do not change with voltage or current.
For a very every case the moment of inertia of a one particle about an axis is given by, I = mr 2 Here, m is the mass of the particle and r its distance from the axis under
Im having trouble understanding these,, could someone explain them in lamens terms
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