Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted
Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted is 2 x 10⁻³…
8 years ago
Physics
What is the difference between soft and hard X-ray?
What is the difference between soft and hard X-ray? Options (a) Velocity (b) Intensity (c) Polarization (d) Frequency Correct Answer:…
8 years ago
The name of ions knocked out from the hot surface is
The name of ions knocked out from the hot surface is Options (a) nuclei (b) neutrons (c) electrons (d) protons…
8 years ago
X-ray beam can be deflected by
X-ray beam can be deflected by Options (a) Magnetic field (b) Electric field (c) Both (a) and (b) (d) None…
8 years ago
The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated by light of frequency ν=2ν₀, the…
8 years ago
The de-Broglie wavelength of an electron moving with a velocity 1.5×10⁸ ms⁻¹ is equal
The de-Broglie wavelength of an electron moving with a velocity 1.5x10⁸ ms⁻¹ is equal to that of a photon. The…
8 years ago
Which of the following is or the property of a cathode ray
Which of the following is or the property of a cathode ray Options (a) It casts shadows (b) It produces…
8 years ago
what should be the velocity of an electron so that its momentum becomes equal
what should be the velocity of an electron so that its momentum becomes equal to that of a photon of…
8 years ago
If particles are moving with same velocity, then maximum de Broglie wavelength will
If particles are moving with same velocity, then maximum de Broglie wavelength will be for Options (a) Neutron (b) Proton…
8 years ago
When ultraviolet rays are incident on metal plate, then photoelectric effect
When ultraviolet rays are incident on metal plate, then photoelectric effect does not occur. It occur by the incidence of…
8 years ago