Home
Class 12
CHEMISTRY
For the Paschen series the value of n(1)...

For the Paschen series the value of `n_(1) and n_(2)` in the expression `Delta E= Rhc ((1)/(n_(1)^(2))-(1)/(n_(2)^(2)))` are

A

`n_(1)=1, n_(2)= 2, 3, 4`,……

B

`n_(1)=2, n_(2)= 3, 4, 5`,…..

C

`n_(1)=3, n_(2)=4, 5, 6`,…..

D

`n_(1)= 4, n_(2)= 5, 6, 7`,……

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2008

    WB JEE PREVIOUS YEAR PAPER|Exercise CHEMISTRY|40 Videos
  • QUESTION PAPER 2010

    WB JEE PREVIOUS YEAR PAPER|Exercise CHEMISTRY|45 Videos

Similar Questions

Explore conceptually related problems

The expression ((1+i)^(n))/((1-i)^(n-2)) equals

Emission transitions in the Paschen series end at orbit n=3 and start from orbit n and can be represented as v= 3.29xx10^(15)(Hz)[1//3^(2)-1//n^(2)] . Calculate the value of n if the transition is observed at 1285 nm. Find the region of the spectrum.

If ninNN , both expression n(n+1)(n+2) and n(n+1)(n+5) are multiple of -

Find the value of (1+x)^(n)+^(n)C_(1)(1+x)^(n-1).(1-x)+^(n)C_(2)(1+x)^(n-2)(1-x)^(2)+.....+(1-x)^(n)

Find the coefficient of x^(r) in the following expression : (x+n)^(n)+(x+2)^(n-1)(x+1)+(x+2)^(n-2)(x+1)^(2)+.....+(x+1)^(n)

The value of lim_(nrarrprop) ((n+1)(2n+1))/n^2 is

Two players P_1a n dP_2 play a series of 2n games. Each game can result in either a win or a loss for P_1dot the total number of ways in which P_1 can win the series of these games is equal to a. 1/2(2^(2n)-.^(2n)C_n) b. 1/2(2^(2n)-2xx.^(2n)C_n) c. 1/2(2^n-.^(2n)C_n) d. 1/2(2^n-2xx.^(2n)C_n)

Find the sum of the series upto n terms ((2n+1)/(2n-1))+3((2n+1)/(2n-1))^2+5((2n+1)/(2n-1))^3+.....

The absolute value of the sum of first 20 terms of series, if S_(n)=(n+1)/(2) and (T_(n-1))/(T_(n))=(1)/(n^(2))-1 , where n is odd, given S_(n) and T_(n) denotes sum of first n terms and n^(th) terms of the series

Evaluate lim_(ntooo) (1)/(1+n^(2))+(2)/(2+n^(2))+...+(n)/(n+n^(2)).

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-Multiple Choice Questions (Chemistry)
  1. Of the following compounds the most acidic is

    Text Solution

    |

  2. The half-life of a radioactive element is 10 hours. How much will be l...

    Text Solution

    |

  3. For the Paschen series the value of n(1) and n(2) in the expression De...

    Text Solution

    |

  4. Under which of the following conditins is the relation DeltaH= Delta E...

    Text Solution

    |

  5. An organic compound made of C, H and N constant 20% nitrogen. Its mole...

    Text Solution

    |

  6. In Cu-ammonia complex, the state of hybridiation of Cu^(+2) is

    Text Solution

    |

  7. The reactin that takes place when Cl(2) gas is passed through conc. Na...

    Text Solution

    |

  8. 'Electron'' is an alloy of

    Text Solution

    |

  9. Blackened oilpainting can be restored into original form by the action...

    Text Solution

    |

  10. Of the following acids the one which has the capability to form comple...

    Text Solution

    |

  11. Atoms in a P(4) molecule of white phosphorus are arranged regularly in...

    Text Solution

    |

  12. Which of the following statements is not correct?

    Text Solution

    |

  13. In aluminium extraction by the Bayer process, alumina is extracted fro...

    Text Solution

    |

  14. The addition of HBr to 2-pentene gives

    Text Solution

    |

  15. Elthelene can be separated from acetylene by passing the mixture throu...

    Text Solution

    |

  16. Reaction of R OH with R'MgX produces

    Text Solution

    |

  17. In the compound HC -= C- overset(overset(CH(3))(|))(C )=CH(2) the hybr...

    Text Solution

    |

  18. The two structures written below represent

    Text Solution

    |

  19. Which of the following carbocations will be most stable?

    Text Solution

    |

  20. Which statement is incorrect?

    Text Solution

    |