New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Atoms and Nuclei question

2017 · Shift 1 · Q48

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Advanced
Physics
Atoms and Nuclei
2017 · Shift 1 · Q48

Atoms and Nuclei question

2017 · Shift 1 · Q48

JEE AdvancedPhysicsAtoms and NucleiNumerical+3 / −1

{}^{131}{\rm I}

is an isotope of Iodine that

B

decays to an isotope of Xenon with a half-life of

8

days. A small amount of a serum labelled with

{}^{131}{\rm I}

is injected into the blood of a person. The activity of the amount of

{}^{131}{\rm I}

injected was

2.4 \times {10^5}

Becquerel

(Bq).

It is known that the injected serum will get distributed uniformly in the blood stream in less than half an hour. After

11.5

hours,

2.5

ml of blood is drawn from person's body, and gives an activity of

115Bq

. The total volume of blood in the person's body, in liters is approximately (you may use

{e^x} \approx 1 + x\,\,

for

\left| x \right| \lt \lt 1

and

\ln 2 \approx 0.7).

Numerical answer

More from Atoms and Nuclei

Highly excited states for hydrogen-like atoms (also called Rydberg states) with nuclear charge Ze are defined by their principle quantum number n, where n >> 1. Which of the following statement(s) is(are) true?2016 · Multiple correct
A hydrogen atom in its ground state is irradiated by light of wavelength 970 $A o$ . Taking hc = 1.237 $\times$ 10 $-$ 6 eVm and the ground state energy of hydrogen atom as $-$ 13.6 eV, the number of lines present in the…2016 · Numerical
The isotope $_{5}^{12} B$ having a mass 12.014 u undergoes $β$ -decay to $_{6}^{12} C$ . $_{6}^{12} C$ has an excited state of the nucleus ( $_{6}^{12} C$ *) at 4.041 MeV above its ground state. If $_{5}^{12} B$ decays to $_{6}^{12} C$ *, the maximum kinetic…2016 · Numerical
An accident in a nuclear laboratory resulted in deposition of a certain amount of radioactive material of half-life 18 days inside the laboratory. Tests revealed that the radiation was 64 times more than the permissible level required for…2016 · MCQ
The electrostatic energy of Z protons uniformly distributed throughout a spherical nucleus of radius R is given by $E = \frac{3}{5} \frac{Z ( Z - 1 ) e ^{2}}{4 π ε _{0} R}$ The measured masses of the neutron, $_{1}^{1} H$ , $_{7}^{15} N$ …2016 · MCQ
Consider a hydrogen atom with its electron in the nth orbital. An electromagnetic radiation of wavelength 90 nm is used to ionize the atom. If the kinetic energy of the ejected electron is 10.4 eV, then the value of n is (hc = 1242 eV nm)2015 · Numerical
A nuclear power plant supplying electrical power to a village uses a radioactive material of half life T years as the fuel. The amount of fuel at the beginning is such that the total power requirement of the village is 12.5 % of the…2015 · Numerical
Match the nuclear processes given in Column I with the appropriate option(s) in Column II: Includes diagram2015 · MCQ