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