問題一覧
1
What is the formula of distance of closest approach
[1/(4πε)][(2ze²)/(K.E.)], (9 * 10⁹)[(2ze²)/(K.E.)]
2
Formula of frequency
v/λ, 1/t
3
Formula of wave number
1/λ
4
Formula of work function(Φ)
hc/λ, hv (where v is frequency), h/t (where t is time), P t (sheet P is power)
5
Value of h is
6.626 * 10^(-34) J sec
6
Value of hc
1240 ev nm, 1.98 * 10^(-25) J m, 12400 eV Å
7
Formula of intensity
Φ/(At) (where A is area and is time), nhv/(At) (where A is area and v is frequency)
8
Which of the following is the correct relation
mv²/r = Kze²/r², mvr = nh/2π
9
Formula of radius of an orbit
0.529 * n²/z Å
10
Formula of velocity of electron
2.18 * 10⁶ * z/n m/s
11
What is the formula of total energy
-13.6 (z/n)²
12
Find the correct relation between energies
T.E. = P.E./2, TE = -KE
13
Formula of ionisation energy
13.6 z² eV, 13.6 z² * 96 KJ/mol
14
What is the formula of binding energy
13.6 (z/n)² eV
15
Which of the following represents UV rays
lymen series
16
Which of the following represents visible rays
balmer series
17
Which of the following represents infrared rays
paschen series, brackett series
18
which of the following represents far infrared rays
pfund series , humphrey series
19
Which of the following represents rydberg formula (in all these n1 represents lower energy state and n2 represents higher energy state)
1/λ = Rz²[(1/n1²)-(1/n2²)]
20
What is the value of R in rydberg's formula
109677 cm^(-1)
21
What is the formula of maximum number of transitions of spectral lines
(n2 - n1)(n2 - n1 + 1)/2
22
What is the formula for de-broglie wavelength
h/mv, h/p (where p is momentum), h/√(2mKE) (where formula of KE is qv), 2πr/n (where n is number of waves)
23
Which of the following relations are correct according to Heisenberg uncertainty principle
∆x∆p ≥ h/4π, ∆E∆t ≥ h/4π, ∆x∆v ≥ h/4πm