24) According to Bohr model allowed values of angular momentum are

Answer is:

integral multiples of h/2(\pie)

Explanation:

According to Bohr model allowed values of angular momentum are integral multiples of h/2(\pie)

Atoms and Nuclei MCQ with Answers

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25) In a Geiger -Marsden experiment, what is the distance of closest approach d to the nucleus of a 7.7 MeV???particle before it comes momentarily to rest and reverses its direction?

Answer is:

30 fm

Explanation:

Use direct formula

26) Bandwidth of an electronic communication system

Answer is:

is the frequency range over which an equipment operates or the portion of the spectrum occupied by the signal

Explanation:

Bandwidth of an electronic communication system is the frequency range over which an equipment operates or the portion of the spectrum occupied by the signal

27) As the mass number A increases, which of the following quantities related to a nucleus does not change?

Answer is:

density

Explanation:

As the mass number A increases, density of a nucleus does not change

28) A system has two charges?qA=2.5?10^?7C?and?qB=?2.5?10^?7C located at points A: (0, 0, ?15 cm) and B: (0,0, +15 cm), respectively. What are the total charge and electric dipole moment of the system?

Answer is:

zero,?7.5?10^?8Cm

Explanation:

use direct formula

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24) According to Bohr model allowed values of angular momentum are

integral multiples of h/2(\pie)

Atoms and Nuclei MCQ with Answers

Related Atoms and Nuclei MCQ with Answers

25) In a Geiger -Marsden experiment, what is the distance of closest approach d to the nucleus of a 7.7 MeV???particle before it comes momentarily to rest and reverses its direction?

30 fm

26) Bandwidth of an electronic communication system

is the frequency range over which an equipment operates or the portion of the spectrum occupied by the signal

27) As the mass number A increases, which of the following quantities related to a nucleus does not change?

density

28) A system has two charges?qA=2.5?10?7C?and?qB=?2.5?10?7C located at points A: (0, 0, ?15 cm) and B: (0,0, +15 cm), respectively. What are the total charge and electric dipole moment of the system?

zero,?7.5?10?8Cm

Atoms and Nuclei MCQ with Answers

28) A system has two charges?qA=2.5?10^?7C?and?qB=?2.5?10^?7C located at points A: (0, 0, ?15 cm) and B: (0,0, +15 cm), respectively. What are the total charge and electric dipole moment of the system?

zero,?7.5?10^?8Cm