AP EAPCET 2024 - 21th May Morning Shift | Atoms and Nuclei Question 2 | Physics

If the energy released per fission of a ${ }_{92}^{235} \mathrm{U}$ nucleus is 200 MeV . The energy released in the fission of 0.1 kg d ${ }_{92}^{235} \mathrm{U}$ in kilowatt - hour is

$22.8 \times 10^5$

$22.8 \times 10^7$

$11.4 \times 10^5$

$820 \times 10^{10}$

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

Inner shell electrons in atoms moving from one energy level to another lower energy level produce

gamma rays

microwaves

radio waves

ultraviolet rays

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

The speed of the electron in a hydrogen atom in the $n=3$ level is

(Planck's constant $=6.6 \times 10^{-34} \mathrm{Js}$ )

$62 \times 10^5 \mathrm{~ms}^{-1}$

$3.7 \times 10^5 \mathrm{~ms}^{-1}$

$7.3 \times 10^5 \mathrm{~ms}^{-1}$

$1.6 \times 10^5 \mathrm{~ms}^{-1}$

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

One mole of radium has an activity of $\frac{1}{3.7}$ kilo curie. Its decay constant is

(Avagadro number $=6 \times 10^{23} \mathrm{~mol}^{-1}$ )

$\frac{1}{6} \times 10^{-10} \mathrm{~s}^{-1}$

$10^{-10} \mathrm{~s}^{-1}$

$10^{-11} \mathrm{~s}^{-1}$

$10^{-8} \mathrm{~s}^{-1}$

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