Which of the following statements is not correct?
Which of the following statements is not correct?
- A
Photographic plates are sensitive to infrared rays
- B
Photographic plates are sensitive to ultraviolet rays
- C
Infrared rays are invisible but can cast shadows like visible light
- D
Infrared photons have more energy than photons of visible light
Similar Questions
If a source of power $4\,kW$ produces $10^{20}$ photons/second, the radiation belongs to a part of the spectrum called
If a source of power $4\,kW$ produces $10^{20}$ photons/second, the radiation belongs to a part of the spectrum called
In a photoelectric effect experiment a light of frequency $1.5$ times the threshold frequency is made to fall on the surface of photosensitive material. Now if the frequency is halved and intensity is doubled, the number of photo electrons emitted will be:
In a photoelectric effect experiment a light of frequency $1.5$ times the threshold frequency is made to fall on the surface of photosensitive material. Now if the frequency is halved and intensity is doubled, the number of photo electrons emitted will be:
- [JEE MAIN 2024]
Using the Heisenberg uncertainty principle, arrange the following particles in the order of increasing lowest energy possible.
$(I)$ An electron in $H _{2}$ molecule
$(II)$ A hydrogen atom in a $H _{2}$ molecule
$(III)$ A proton in the carbon nucleus
$(IV)$ $A H _{2}$ molecule within a nanotube
Using the Heisenberg uncertainty principle, arrange the following particles in the order of increasing lowest energy possible.
$(I)$ An electron in $H _{2}$ molecule
$(II)$ A hydrogen atom in a $H _{2}$ molecule
$(III)$ A proton in the carbon nucleus
$(IV)$ $A H _{2}$ molecule within a nanotube
- [KVPY 2018]
Momentum of a photon of wavelength $\lambda$ is
Momentum of a photon of wavelength $\lambda$ is
- [AIPMT 1993]
Photo-electric effect can be explained by
Photo-electric effect can be explained by