If an electron jumps from 3rd orbit to second orbit its
wavelength is λ, then the wavelength of electron when it jumps from
4th orbit to third orbit in terms of λ is?
Ans. 20/7 λ
Ques 3. The height from earth’s syrface at which acceleration due to
qravity becomes g/4 is __? (Where g is acceleratio due to gravity on
the surface of earth and R is radius of earth)
A. √2R
B. R
C. R/√2
D. 2R
Ans. B