Home
Video Series
Fast Math Tricks
Quantitative Aptitude
Class 8 Maths Videos
Class 9 Maths Videos
Class 10 Maths Videos
Reasoning Videos
Blog
Store
Register /Login
Home
Topic
12th Grade
Physics
Atoms And Nuclei
Question
A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8 : 1. The ratio of radii of the fragments is
Options:
A
.
 1 : 2
B
.
 1 : 4
C
.
 4 : 1
D
.
 2 : 1
Answer: Option A
:
A
By conservation of momentum
m
1
v
1
=
m
2
v
2
⇒
v
1
v
2
=
8
1
=
m
2
m
1
…… (i)
Also from
r
∝
A
1
3
⇒
r
1
r
2
=
(
A
1
A
2
)
1
3
=
(
1
8
)
1
3
=
1
2
Was this answer helpful ?
0 Likes
Next Question
Report Problem
Share
Submit Solution
Your email address will not be published.
Required fields are marked
*
More Questions on This Topic :
Question 1.
Two Cu64 nuclei touch each other. The electrostatics repulsive energy of the system will be ....
Question 2.
If the half life of a radioactive sample is 10 hours, its mean life is....
Question 3.
Unit of radioactivity is rutherford. Its value is....
Question 4.
When 92U235 undergoes fission. 0.1% of its original mass is changed into energy. How much energy is released if 1 kg of ....energy is released if 1 kg of 92U235 undergoes fission
Question 5.
Which of the following statement is correct....
Question 6.
The transition from the state n = 4 to n = 3 in a hydrogen like atom results in ultraviolet radiation. Infrared radiatio....Infrared radiation will be obtained in the transition from :
Question 7.
The ground state energy of hydrogen atom is -13.6eV. The kinetic energy of the electron in this state is:....
Question 8.
Energy required for the electron excitation in Li++ from the first to the third Bohr orbit is :....
Question 9.
If 13.6 ev energy is required to ionise the hydrogen atom, then the energy required to remove an electron from first exi....an electron from first exited state (n = 2) is
Question 10.
The energy of the ground electronic state of hydrogen atom is -13.6 eV. The energy of the first excited stae will be : &....The energy of the first excited stae will be :
Latest Videos
Direction Sense Test
Part 1
Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP
Part 1 : (14-02-2024)
GPOE
Chapter 1 - Global Steel Scenario & India Steel Industry
Part 1 : (17-02-2024)
Industry and Company Awareness (ICA)
Cube & Cuboid
Part 1
Reasoning (Hindi)
Data Interpretation (DI)
Basic Concept
Reasoning (Hindi)
Counting Figures Part 1
Counting Of Straight Lines
Reasoning (Hindi)
Sail E0 free webinar
Webinars
Real Numbers
Part 7
Class 10 Maths
Real Numbers
Part 1
Class 10 Maths
Polynomials
Part 1
Class 10 Maths
Latest Test Papers
Pie Chart - Test Paper 1
Data Interpretation
Reasoning & DI
Tabulation - Test Paper 2
Data Interpretation
Reasoning & DI
Test Paper 1
Direction Sense Test
Reasoning & DI
ICA , RDIC,GFM
Free Modal Test Paper - Non - Technical Branch
SAIL Junior Officer E0
GFM Combined 1
Free Revision Test
SAIL JO E-0
One click Login
Login With Google
Old way of Login
Login With Email
Submit Problem
Problem Type (Required)
Choose Problem Type
Incorrect Topic
Incomplete Question
Wrong Question
Wrong Solution
Wrong Option
Explaination : Please write a little about the issue
Submit Solution