Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
`        Suppose an attractive nuclear force acts between two protons which may be written as F = Ce-kr/r2. (a) Write down the dimensional formulae and appropriate SI units of C and k. (b) Suppose that k = 1 fermi-1 and that the repulsive electric force between the protons is just balanced by the attractive nuclear force when the separation is 5 fermi. Find the value of C.`
5 years ago Navjyot Kalra
654 Points
```							Sol. Expression of electrical force F = C * e^-kr/r^2
Since e^-kr is a pure number. So, dimecsional formulae of F = dim ensional formulae of C/dim ensional formulae of r^2
Or, [MLT^–2][L^2] = dimensional formulae of C = [ML^3T^–2]
Unit of C = unit of force × unit of r^2 = Newton × m^2 = Newton–m^2
Since –kr is a number hence dimensional formulae of
K = 1/dim entional formulae of r = [L^-1] Unit of k = m^-1

```
5 years ago
```							Already in peat b given k=1Fermi-1so k is simply per meter *and since e is purely a number equate c to f*rsquare
```
2 years ago
```							For part b)equate F=kq1q2/r*2 to F=C/e*kr.r*2 then r*2 on both sides cancelled put value of e as 2.7 power 5 u will get the answer as 3.3*10power -26
```
2 years ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Electromagnetic Induction

View all Questions »  ### Course Features

• 731 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution  ### Course Features

• 57 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions