| ⇦ | 
| ⇨ |
In which of the following systems will the radius of the first orbit (n=1) be minimum?
Options
(a) Single ionised helium
(b) Deutron atom
(c) Hydrogen atom
(d) Doubly ionised lithium
Correct Answer:
Doubly ionised lithium
Explanation:
r ∝ 1 / Z. For doubly ionised lithium, Z = 3
.·. r will be minimum.
Related Questions: - Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰C
- An object is seen through a simple microscope of focal length 12 cm.
- A cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰C
- An object is seen through a simple microscope of focal length 12 cm.
- A cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
“r ∝ 1 / Z. For doubly ionised lithium, Z = 3
.·. r will be minimum.”