One milligram of matter on convertion into energy will give
One milligram of matter on convertion into energy will give
Options
(a) 9×10⁵ J (b) 9×10¹⁰ J (c) 9×10³ J (d) 90 J
Correct Answer:
9×10¹⁰ J
Explanation:
No explanation available. Be the […]
Atoms and Nuclei
The transition from the state 3 n = 3 to n = 1 in a hydrogen like atom results
The transition from the state 3n = 3 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from:
Options
(a) 2 […]
In nuclear fission, the percentage of mass converted into energy is about
In nuclear fission, the percentage of mass converted into energy is about
Options
(a) 10% (b) 0.01% (c) 0.10% (d) 1%
Correct Answer:
0.10%
Explanation:
No explanation available. Be the first to write […]
In Bohr model of hydrogen atom, the force on the electron depends on the principal
In Bohr model of hydrogen atom, the force on the electron depends on the principal quantum number (n) as
Options
(a) independent of n (b) F∞1/n⁵ (c) F∞1/n⁴ (d) F∞1/n³
Correct Answer:
F∞1/n⁴
The de-Broglie wavelength of an electron in the first Bohr orbit is
The de-Broglie wavelength of an electron in the first Bohr orbit is
Options
(a) Equal to one-fourth the circumference of the first orbit (b) Equal to half the circumference of first orbit (c) […]
An atom bomb weighing 1 kg explodes releasing 9×10¹³ J of energy.
An atom bomb weighing 1 kg explodes releasing 9×10¹³ J of energy. What percentage of mass is converted into energy?
Options
(a) 0 .1% (b) 1% (c) 2% (d) 10%
Correct Answer:
0 […]
Electron in hydrogen atom first jumps from third excited state to second excited
Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelengths λ₁:λ₂ emitted in the two cases […]
The wavelength of the first line of Lymasn series for hydrogen atom is equal
The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion. The atomic number Z of hydrogen like […]
Which pair is isotonic?
Which pair is isotonic?
Options
(a) ₇N¹³,₇N¹⁴ (b) ₆C¹⁴,₆C¹² (c) ₆C¹⁴,₇N¹⁴ (d) ₇N¹³,₆C¹²
Correct Answer:
₇N¹³,₆C¹²
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
Which of the following is suitable for the fusion process?
Which of the following is suitable for the fusion process?
Options
(a) Heavy nuclei (b) Light nuclei (c) Atom bomb (d) Radioactive decay
Correct Answer:
Light nuclei
Explanation:
No explanation available. Be the […]