Question

The ratio of the energy of photon of λ = 2000 Å to that of λ = 4000 Å is

Solution

Correct option is

2

SIMILAR QUESTIONS

Q1

A photon of wavelength 1.4 Å collides with an electron. After collision, the wavelength of the photon is found to be 2.0 Å. Calculate the energy of the scattered electron.

Q2

If the binding energy of electrons in a metal is 250 kJ mol–1, what should be threshold frequency of the striking photons?

Q3

What is the minimum uncertainty in the position of a bullet of a mass 5g that is known to have a speed somewhere between 550,00000 and 550,00001 ms–1?

Q4

 

When would de Broglie wavelength of a moving electron become equal to that of a moving proton? Mass of electron =

 9.1095 × 10–31 kg and mass of proton = 1.6725 × 10–27 kg.  

Q5

 

How fast is an electron moving if it has a wavelength equal to the distance it travels in one second?

(mass of electron = 9.1 × 10–31 kg) 

Q6

To which orbit the electron in the hydrogen atom will jump on absorbing 12.1 eV of energy? 

Q7

Nitrogen has the electronic configuration  and not  which is determined by

Q8

 

The valence shell electron of sodium has the quantum numbers

(nlms)

Q9

Which of the following has largest de-Broglie wavelength, provided all have equal velocity?

Q10

Which of the following relates to photons both as wave motion and as a stream of particles?