Atoms and Nuclei-Hydrogen Spectrum [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 7 - 10 of 18
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Question 7
Question MCQ▾
Which of the series of hydrogen spectrum are not in the visible region?
(1) Lyman series (2) Paschen series
(3) Bracket series (4) Balmer series
Select the correct answers and mark it according to the following codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 1 and 3 are correct | |
b. | 1 and 2 are correct | |
c. | 1,2 and 3 are correct | |
d. | 2 and 4 are correct |
Question 8
Question MCQ▾
The third line of Balmer series of an ion equivalent to hydrogen atom has wavelength of 108.5 nm The ground state energy of an electron of this ion will be
Choices
Choice (4) | Response | |
---|---|---|
a. | 3.4 eV | |
b. | 122.4 eV | |
c. | 13.6 eV | |
d. | 54.4 eV |
Question 9
Question Assertion-Reason▾
Assertion(Ꭺ)
Hydrogen atom consists of only one electron but its emission spectrum has many lines.
Reason(Ꭱ)
Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.
Choices
Choice (4) | Response | |
---|---|---|
a. | Ꭺ is true but Ꭱ is false | |
b. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
c. | Ꭺ is false but Ꭱ is true | |
d. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ |
Question 10
Question MCQ▾
The ratio of the frequencies of the long wavelength limits of Lyman and Balmer series of hydrogen spectrum is
Choices
Choice (4) | Response | |
---|---|---|
a. | 1: 4 | |
b. | 5: 27 | |
c. | 27: 5 | |
d. | 4: 1 |