The lines in the visible region of the hydrogen spectrum are known as the

a. Lyman series.
b. Balmer series.
c. Paschen series.
d. Bohr series.


b

Physics & Space Science

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________ optics greatly reduces the effect of atmospheric turbulence by deforming the shape of the mirror by computer control

Fill in the blank(s) with correct word

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Adams and Leverrier both predicted the position of Neptune, based on its effects on

A) the Sun. B) Saturn. C) Pluto. D) Jupiter. E) Uranus.

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A heating element having a resistance (at its operating temperature) of 148 ? is connected to a battery having an emf of 523 V and unknown internal resistance

It is found that thermal energy is being generated in the resistance of the heating element at a rate of 66.0 W. What is the rate at which thermal energy is being generated in the internal resistance of the battery?

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What are the 5 main properties of stars?

A: Mass, Temperature, Size, Luminosity, Age on Main Sequence B: Distance, Parallax, Brightness, Luminosity, Size C: Radial Velocity, Transits, Microlensing, Astrometry, Direct Imaging D: Mass, Distance, Size, Parallax, Brightness E: Color, Temperature, Spectral Type, Peak Wavelength, Absorption Lines

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