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The energy of photons of visible light with maximum wavelength in eV is approximately

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Important Questions on Dual Nature of Matter and Radiation

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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 21
If h is the Planck's constant, then the momentum of a photon of wavelength 0.01 Å is
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 22
If the wavelength of X-ray photon is 0.01 Å, then its momentum(in kg m s-1) is 
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 23
An ultraviolet light bulb emitting 400 nm and an infrared light bulb emitting at 700 nm each are rated at 130 W. The ratio of the number of photon emitted per second by the ultraviolet and infrared sources is
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 24
Which of the following is the wrong statement in connection with Davisson-Germer experiment?
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 25
When the momentum of a photon is changed by an amount p′, the corresponding change in the de-Broglie wavelength is found to be 0.2%. Then, the original momentum of the photon was
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 26
Which of the following curve denotes the change in particle's momentum and the associated de-Broglie wavelength?
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 27
In Davisson-Germer experiment, when electron strike the Ni-crystal, then which of the following is obtained in the form of diffracted wave?
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Physics Crash Course NEET>Chapter 19 - Dual Nature of Matter and Radiation>Level 2>Q 28
Which one of the following graphs in figure shows the variation of photoelectric current (I) with voltage (V) between the electrodes in a photoelectric cell?