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The electric potential at the surface of an atomic nucleus (z=50) of radius 9.0×10⁻¹³ cm is
Options
(a) 80 volt
(b) 8×10⁶ volt
(c) 9 volt
(d) 9×10⁵ volt
Correct Answer:
8×10⁶ volt
Explanation:
V = (1 / 4πε₀). q/r
= [9 × 10⁹ × 50 × 1.6 × 10⁻¹⁹] / 9 × 10⁻¹⁵
= 8 × 10⁶ volt
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
- An electric kettle has two heating elements. One brings it to boil in ten minutes
- Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- A black body radiates 20 W at temperature 227⁰C. It temperature of the black body
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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