Question

In Rutherford's a-scattering experiment the number of a-particles scattered per minute at an angle of 45ŗ is 9000. =-0864321`0The number of a-particles scattered per minute at an angle of 120ŗ will be-

• A. 36000
• B. 9000
• C. 4000
• D. 1000

Answer 1

Answer: (C)

4000

Answer 2

N =$\frac{kZ^{2}}{\sin^{4}(\theta/2)}$