The ground stated energy for the hydrogen atom is 5.44 x ...
The ground stated energy for the hydrogen atom is 5.44 x 10-19J . If an electron drops from zero energy to ground state, calculate the frequency of the emitted radiation?
[h = 6.6 x 10-34 Js]
5.0 x 1016 Hz
2.0 x 1016 Hz
5.0 x 1015 Hz
2.0 x 1015 Hz
No correct option
Correct answer is E
∆E = hf
f = (∆E)/h = (5.44 x 10-19)/6.6 x 10-34 = 8.24 x 1014
Sound travels at the fastest speed in ...
Which of the following statements are correct? i. land and sea breezes are natural convection cur...
The main purpose of the transformer in an a.c radio set is to? ...
Which of the following could be effectively used to reduce friction? ...
Which of the following statements about evaporation is not correct? ...
The size of the hole of a pin hole camera is increased. The resultant image formed becomes ...
A lamp is rated 240V 60W, calculate the resistance of its filament ...