KCET · Physics · Nuclear Physics
The radius of \({ }_{29} \mathrm{Cu}^{64}\) nucleus in Fermi is (given \(\mathrm{R}_{0}=1.2 \times 10^{-15} \mathrm{~m}\) )
- A \(9.6\)
- B \(4.8\)
- C \(1.2\)
- D \(7.7\)
Answer & Solution
Correct Answer
(B) \(4.8\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} \mathrm{R}=\mathrm{R}_{0} \mathrm{~A}^{1 / 3} &=1.2 \times 10^{-15} \times(64)^{1 / 3} \\ &=4.8 \times 10^{-15} \mathrm{~m} \end{aligned}\) or \(\quad \mathrm{R}=4.8\) fermi
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A luminous point object \(O\) is placed at a distance \(2 R\) from the spherical boundary separating two transparent media of refractive indices \(n_1\) and \(n_2\) as shown, where \(R\) is the radius of curvature of the spherical surface. If \(n_1=\frac{4}{3}, n_2=\frac{3}{2}\) and \(R=10 \mathrm{~cm}\), the image is obtained at a distance from \(P\) equal to
KCET 2024 Medium - A particle of mass \( 1 \mathrm{gm} \) and charge \( 1 \mu \mathrm{C} \) is held at rest on a frictionless horizontal surface at distance \( 1 \mathrm{~m} \) from the fixed charge \( 2 \mathrm{mC} \). If the particle is released, it will be repelled. The speed of the particle when it is at a distance of \( 10 \mathrm{~m} \) from the fixed chargeKCET 2016 Medium
- A mass of \(10 \mathrm{~kg}\) is suspended from a spring balance. It is pulled aside by a horizontal string so that it makes an angle of \(60^{\circ}\) with the vertical. The new reading of the balance isKCET 2008 Medium
- Frequency of revolution of an electron revolving in nth orbit of H-atom is proportional toKCET 2019 Medium
- Light emitted during the de excitation of electron from \(n=3\) to \(n=2\), when incident on a metal, photoelectrons are just emitted from that metal. In which of the following de excitations photoelectric effect is not possible?KCET 2013 Easy
- An \(\alpha\)-particle of mass \(6.4 \times 10^{-27} \mathrm{~kg}\) and charge \(3.2 \times 10^{-19} \mathrm{C}\) is situated in a uniform electric field of \(1.6 \times 10^{5} \mathrm{Vm}^{-1}\). The velocity of the particle at the end of \(2 \times 10^{-2} \mathrm{~m}\) path when it starts from rest isKCET 2009 Hard
More PYQs from KCET
- The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is \(0.59 \mathrm{~V}\). The equilibrium constant for the reaction of the cell isKCET 2010 Medium
- Which of the following property is true for the given sequence? \(\mathrm{NH}_{3}>\mathrm{PH}_{3}>\mathrm{AsH}_{3}>\mathrm{SbH}_{3}>\mathrm{BiH}_{3}\) ?KCET 2021 Easy
- For the decomposition of a compound \(A B\) at \(600 \mathrm{~K}\), the following data were obtained
The order for the decomposition of \(A B\) isKCET 2009 Easy - If \(f(x)=\log _{x^{2}}\left(\log _{e} x\right)\), then \(f^{\prime}(x)\) at \(x=e\) isKCET 2009 Hard
- If \(A=\left[\begin{array}{ccc}1 & -1 & 1 \\ 2 & 1 & -3 \\ 1 & 1 & 1\end{array}\right], 10 B=\left[\begin{array}{ccc}4 & 2 & 2 \\ -5 & 0 & \alpha \\ 1 & -2 & 3\end{array}\right]\) and \(B\) is the inverse of \(A\), then the value of \(\alpha\) isKCET 2007 Medium
- Chemiosmotic theory of ATP synthesis in the mitochondrion is based onKCET 2012 Easy