NEET UG · Physics

Dual nature of matter

5 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 5 questions

What is the energy of a photon of wavelength $310 nm$ ? (use $h c = 1240 eV nm$ , answer in eV)
What is the energy of a photon of wavelength $248 nm$ ? (use $h c = 1240 eV nm$ , answer in eV)
What is the energy of a photon of wavelength $620 nm$ ? (use $h c = 1240 eV nm$ , answer in eV)
When light of wavelength $400 nm$ falls on a metal surface, the stopping potential is $1.8 V$ . What is the stopping potential for light of wavelength $300 nm$ on the same surfa…
An electron and a photon have the same wavelength of $0.05 nm$ . The ratio of the kinetic energy of the electron to the energy of the photon is nearly (take $h = 6.63 \times 1 0^{- 34} J s$ …

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