TS EAMCET 2022 (Online) 18th July Evening Shift | Atoms and Nuclei Question 72 | Physics

Consider a nucleus ${ }_{30}^{60} \mathrm{X}$. Its approximate density is (take, $1 \mathrm{amu}=1.6 \times 10^{-27} \mathrm{~kg}, R_0=1.2 \times 10^{-15} \mathrm{~m}$ )

$12 \times 10^{18} \mathrm{~kg} / \mathrm{m}^3$

$18.5 \times 10^{19} \mathrm{~kg} / \mathrm{m}^3$

$3.3 \times 10^{16} \mathrm{~kg} / \mathrm{m}^3$

$22 \times 10^{17} \mathrm{~kg} / \mathrm{m}^3$

TS EAMCET 2022 (Online) 18th July Morning Shift

MCQ (Single Correct Answer)

-0

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

Mass

Volume

Density

Binding energy

TS EAMCET 2020 (Online) 14th September Evening Shift

MCQ (Single Correct Answer)

-0

If the first line in the Lyman series has wavelength $\lambda$, then the first line in Balmer series has the wavelength

$\frac{27}{5} \lambda$

$\frac{32}{27} \lambda$

$\frac{28}{21} \lambda$

$\frac{15}{4} \lambda$

TS EAMCET 2020 (Online) 14th September Evening Shift

MCQ (Single Correct Answer)

-0

The half-life of a radiocative isotope is 30 h . How long will it take to get reduced to $12.5 \%$ of its initial amount?

120 h

90 h

60 h

50 h

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