Atoms - Online Test
Q1. Balmer series emission wavelengths are described by
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. Paschen series emission wavelengths are described by
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. Fluorescent lamps are more efficient than incandescent lamps in converting electrical energy to visible light because
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. According to Bohr model allowed values of angular momentum are
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. In a Geiger -Marsden experiment, what is the distance of closest approach d to the nucleus of a 7.7 MeV α−particle before it comes momentarily to rest and reverses its direction?
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. What is the shortest wavelength present in the Paschen series of spectral lines?
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?
Answer : Option A
Explaination / Solution:
No Explaination.
Q8. In comparison to atomic size in Rutherford’s model, the size of the atom in Thomson’s model is
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. In the ground state of which model electrons are in stable equilibrium with zero net force?
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. According to which model a classical atom is doomed to collapse?
Answer : Option C
Explaination / Solution:
No Explaination.
