Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JEE Main 20249 AprilMorning Shift

Exam: JEE Main
Year: 2024
Date: 9 April
Shift: Morning Shift
Subject: Physics
Chapter: Nuclear Physics

JEE Main 2024 · 9 April · Morning Shift · Physics · Nuclear Physics

The energy equivalent of 1 ~g of substance is :

The energy equivalent of

1 \mathrm{~g}

of substance is :

Options

A $5.6 \times 10^{12} \mathrm{MeV}$
B $5.6 \times 10^{26} \mathrm{MeV}$
C $11.2 \times 10^{24} \mathrm{MeV}$
D $5.6 \mathrm{eV}$

Correct answer

B. $5.6 \times 10^{26} \mathrm{MeV}$

Step-by-step solution

\mathrm{E}=\mathrm{mC}^2

\begin{aligned} & \Rightarrow \mathrm{E}=\left(1 \times 10^{-3}\right) \times\left(3 \times 10^8\right)^2 \mathrm{~J} \\ & \Rightarrow \mathrm{E}=\left(10^{-3}\right)\left(9 \times 10^{16}\right)\left(6.241 \times 10^{18}\right) \mathrm{eV} \\ & \mathrm{E}=56.169 \times 10^{31} \mathrm{eV} \\ & \mathrm{E} \approx 5.6 \times 10^{26} \mathrm{MeV} \\ & \end{aligned}

$$

Practice Nuclear Physics on Quantrex Academy →

More from Nuclear Physics

A nuclear reactor starts producing a radioactive nuclide X from t = 0 , at a constant… JEE Advanced 2026 Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows… JEE Main 2026 The energy released if hydrogen atoms are combined to form ^ 4 _ 2 He is __________ MeV.… JEE Main 2026 The energy released when (7)/(17.13) kg of ^ 7 _ 3 Li is converted into ^ 4 _ 2 He by… JEE Main 2026 Assuming the experimental mass of ^ 12 _ 6 C as 12 u , the mass defect of ^ 12 _ 6 C atom… JEE Main 2026 Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a… JEE Main 2026 The binding energy per nucleon of ^ 209 _ 83 Bi is _______ MeV. [Take m(^ 209 _ 83 Bi) =… JEE Main 2026 A nucleus has mass number α and radius R_ α . Another nucleus has mass number β and… JEE Main 2026 Full Nuclear Physics list All JEE Main PYQs