Easy
The particle nature and wave nature of electromagnetic waves and electrons can be demonstrated by which of the following?
- AElectron has small mass and is deflected by a metal sheet
- B$X$-rays are diffracted and reflected by a thick metal sheet
- CLight is refracted and diffracted
- DPhotoelectricity and electron microscopy
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Which microscope is used for nanotechnology?
Difficult
View SolutionAn electron moving with speed $v$ and a photon moving with speed $c$ have the same de Broglie wavelength. The ratio of the kinetic energy of the electron to that of the photon is -
Assertion $(A)$: In the photoelectric effect,on increasing the intensity of light,both the number of electrons emitted and the kinetic energy of each of them increase,but the photoelectric current remains unchanged.
Reason $(R)$: The photoelectric current depends only on the wavelength of light.
Reason $(R)$: The photoelectric current depends only on the wavelength of light.
Medium
View SolutionWhich of the following support the quantum nature of the $EM$ radiations?
$(A)$ Photoelectric effect
$(B)$ Compton effect
$(C)$ Doppler effect
$(D)$ Field effect
$(A)$ Photoelectric effect
$(B)$ Compton effect
$(C)$ Doppler effect
$(D)$ Field effect
Medium
View SolutionThe book “Physics of Physics” was written by
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