The de-Broglie wavelength is proportional to 
(1) λ1v               

(2) λ1m

(3) λ1p               

(4) λp

Subtopic:  De-broglie Wavelength |
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Particle nature and wave nature of electromagnetic waves and electrons can be shown by 

(1) Electron has small mass, deflected by the metal sheet

(2) X-ray is diffracted, reflected by thick metal sheet

(3) Light is refracted and defracted

(4) Photoelectricity and electron microscopy

Subtopic:  Particle Nature of Light |
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The de-Broglie wavelength of a particle moving with a velocity 2.25×108 m/s is equal to the wavelength of the photon. What is the ratio of the kinetic energy of the particle to the energy of the photon? (velocity of light is 3×108 m/s)

1. 1/8 2. 3/8
3. 5/8 4. 7/8
Subtopic:  De-broglie Wavelength |
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The speed of an electron having a wavelength of 10-10m is

(a) 7.25×106 m/s                   (b) 6.26×106 m/s 
(c) 5.25×106 m/s                   (d) 4.24×106 m/s

Subtopic:  De-broglie Wavelength |
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The kinetic energy of electron and proton is 10-32 J. Then the relation between their de-Broglie wavelengths is

(1) λp<λe                 

(2) λp>λe

(3) λp=λe                 

(4) λp=2λe

Subtopic:  De-broglie Wavelength |
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The de-Broglie wavelength of a particle accelerated with 150 volt potential is 10-10 m. If it is accelerated by 600 volts p.d., its wavelength will be
(1) 0.25 Å                 

(2) 0.5 Å

(3) 1.5 Å                   

(4) 2 Å

Subtopic:  De-broglie Wavelength |
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The de-Broglie wavelength associated with a hydrogen molecule moving with a thermal velocity of 3 km/s will be
(1) 1 Å                     

(2) 0.66 Å

(3) 6.6 Å                 

(4) 66 Å

Subtopic:  De-broglie Wavelength |
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When the momentum of a proton is changed by an amount P0, the corresponding change in the de-Broglie wavelength is found to be 0.25%. Then, the original momentum of the proton was 
(a) P0                   (b) 100  P0
(c) 400 P0             (d) 4 P0

Subtopic:  De-broglie Wavelength |
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The de-Broglie wavelength of a neutron at 27 °C is λ. What will be its wavelength at 927 °C
(a) λ / 2                        (b) λ / 3
(c) λ / 4                        (d) λ / 9

Subtopic:  De-broglie Wavelength |
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An electron and proton have the same de-Broglie wavelength. Then the kinetic energy of the electron is

(1) Zero

(2) Infinity

(3) Equal to the kinetic energy of the proton

(4) Greater than the kinetic energy of the proton

Subtopic:  De-broglie Wavelength |
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