The momentum of the photon of wavelength 5000Å will be

(a) 1.3×10-27 kg-m/sec         (b) 1.3×10-28 kg-m/sec
(c) 4×1029 kg-m/sec              (d) 4×10-18 kg-m/sec

Concept Questions :-

De-broglie wavelength
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The momentum of a photon of energy hv will be

(a) hv      (b) hv/c
(c) hvc     (d) h/v

Concept Questions :-

De-broglie wavelength
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If the momentum of a photon is p, then its frequency is

(a) phc           (b) pch

(c) mhc           (d) mch

where m is the rest mass of the photon

Concept Questions :-

De-broglie wavelength
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An AIR station is broadcasting the waves of wavelength 300 metres. If the radiating power of the transmitter is 10 kW, then the number of photons radiated per second is

(a) 1.5×1029              (b) 1.5×1031
(c) 1.5×1033              (d) 1.5×1035

Concept Questions :-

Electron emission
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The energy of a photon is E = hv and the momentum of photon p=hλ, then the velocity of photon will be

(a) E/p                      (b) Ep

(c)  EP2                  (d) 3×108 m/s

Concept Questions :-

De-broglie wavelength
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The approximate wavelength of a photon of energy 2.48 eV is 
(a) 500 Å                    (b) 5000 Å
(c) 2000 Å                   (d) 1000 Å

Concept Questions :-

De-broglie wavelength
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The momentum of a photon in an X-ray beam of 10-10 metre wavelength is 
(a) 1.5×10-23  kg-m/sec               (b) 6.6×10-24 kg-m/sec
(c) 6.6×10-44 kg-m/sec                (d) 2.2×10-52  kg-m/sec

Concept Questions :-

De-broglie wavelength
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Energy of a quanta of frequency 1015 Hz and h=6.6×10-34 J-sec will be 
(a) 6.6×10-19 J            (b) 6.6×10-12 J
(c) 6.6×10-49 J            (d) 6.6×10-41 J

Concept Questions :-

Particle nature of light
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Momentum of a photon of wavelength λ is

(a) hλ            (b) Zero
(c) c2          (d) c

Concept Questions :-

Particle nature of light
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Wavelength of a 1 keV photon is 1.24×10-9 m. What is the frequency of 1 MeV photon

(a) 1.24×1015 Hz      (b)  2.4×1020 Hz
(c) 1.24×1018 Hz      (d) 2.4×1023 Hz

Concept Questions :-

Particle nature of light
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