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Nour Jandali

Nour J.

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Khoobchandra Agrawal verified

Numerade educator

For the hydrogen atom in the ground state, the orbital angular momentum predicted by Bohr's model and its true value are: (a) ?/2 and 0, respectively; (b) ? and ?, respectively; (c) ? and 0, respectively; (d) 0 and ?, respectively; (e) ? and ?/2, respectively; (f) ?/2 and ?/2, respectively.

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Mahipal Kumawat verified

Numerade educator

The visible electromagnetic spectrum ranges from about 390 nm (violet) to 760 nm (red). This corresponds to photons with energies from (h = 6.6 × 10^-34 J·s, c = 3 × 10^8 m/s, e = 1.6 × 10^-19 C)..... (a) 1.4 eV to 2.7 eV; (b) 1.6 eV to 3.2 eV; (c) 1.8 eV to 3.5 eV; (d) 1.4 keV to 2.7 keV; (e) 1.6 keV to 3.2 keV; (f) 1.8 keV to 3.5 keV.

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Pritesh Ranjan verified

Numerade educator

The wavelength at the peak of the emitted spectrum of a star is 580 nm. The temperature at the star surface is (b = 2.9 × 10^?3 m·K): (a) 3000 K; (b) 4000 K; (c) 5000 K; (d) 6000 K; (e) 7000 K; (f) 8000 K

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