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The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be. The number of nucleons in Ge are
Options
(a) 72
(b) 73
(c) 74
(d) 75
Correct Answer:
72
Explanation:
Nuclear radii R = R₀(A)¹/³, where R₀ = 1.2 Fm
(or), R ∝ (A)¹/³
Rʙₑ / Rɢₑ = (9)¹/³ / (A)¹/³ (or), Rʙₑ / 2Rʙₑ = (9)¹/³ / (A)¹/³ (Given: Rɢₑ = 2Rʙₑ)
(A)¹/³ = 2 × (9)¹/³ ⇒ A = 2³ × 9 = 8 × 9 = 72
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
- In which of the processes, does the internal energy of the system remain constant?
- Electrons used in an electron microscope are accelerated by a voltage of 25 kV
- If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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Nuclear Radius, R=Ro(A)1/3, where Ro ~ 1.2fm (fermi unit=10-15)
Or R=(A)1/3.
RBe /RGe = (9)1/3/(A)1/3
RBe /2 RBe = (9)1/3/(A)1/3 …-(Given: RBe: RGe = 1:2)
Or (A)1/3 = 2*(9)1/3
Hence, A=23 * 9
=8*9
=72.
Hence, the number of nucleons is 72.