Fill in the blanks :
Intersactions between individuals of same species are termed `…………..` interactions and those between individuals of different species are termed `………….` interactions .
Correct Answer - C
`(c )` `m(S)=(12!)/(4!4!4!3!)3!=(12!)/(4!4!4!)`
`n(E)=` the number of ways in which any one boy gets both the pens
`="^(3)C_(1)^(10)C_(2)(8!)/(4!4!2!)2!=3xx45(8!)/(4!4!)`
`:.P(E)=(3xx45(8!)/(4!4!))/((12!)/(4!4!4!))=(2)/(11)`
`:.` Required probability `=1-(2)/(11)=(9)/(11)`
The two results utilized by Neils Bohr to overcome the drawbacks of Rutherford model were :
Wave particle duality of electromagnetic radiation
Line emission spectra of hydrogen