Question

The wavelength of de Broglie wave associated with a thermal neutron of mass m at absolute temperature T is given by (here k is the Boltzmann constant) 

Solution

Correct option is

  

                                             

         

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SIMILAR QUESTIONS

Q1

No atoms of radioactive element emit N2 beta particles per second. The decay constant of element in sec–1 is

Q2

A radioactive element has half life period 800 yrs. After 6400 yrs what amount will remain

Q3

A nucleus  emits one alpha particle and two β-particle The resulting nucleus is

Q4

A sample of a radioactive element has a mass of 10g at an instant t = 0. The oppropriate mass of this element in the element in the sample after two mean lives is

Q5

If the half lives of a radioactive element that decays in 6 days is 7/8. The fraction that decays in 10 days will be

Q6

The wavelength  of de Broglie waves associated with an electron (massm, charger e) accelerated through a potential difference of V is given by (his Planck’s constant)  

Q7

A proton, when accelerated through a potential difference of V volts, has a wavelength  associated with it. If an alpha particle ius to have the same wavelength , it must be accelerated through a potential difference of

Q8

A proton and an electron move with the same velocity. The associated wavelength for proton is

Q9

Two particles of masses m and 2m have equal kinetic energies. Their de Broglie wavelength are in the ratio of 

Q10

The momentum of a photon of frequency v is