Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work
Light of frequency 8x10¹⁵ Hz is incident on a substance of photoelectric work function 6.125 eV. The maximum kinetic energy…
7 years ago
Dual Nature of Matter and Radiation
The photoelectric threshold wevelength for potassium (work function being 2 eV) is
The photoelectric threshold wevelength for potassium (work function being 2 eV) is Options (a) 620 nm (b) 310 nm (c)…
7 years ago
Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV.
Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV. The minimum kinetic…
7 years ago
If threshold wevelength for sodium is 6800 Å, the work function will be
If threshold wevelength for sodium is 6800 Å, the work function will be Options (a) 1.8 eV (b) 2.5 eV…
7 years ago
A particle of mass 1mg has the same wavelength as an electron moving with a velocity
A particle of mass 1mg has the same wavelength as an electron moving with a velocity of 3 x 10⁶…
7 years ago
A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
A beam of cathode rays is subjected to crossed Electric(E) and Magnetic fields(B). The fields are adjusted such that the…
7 years ago
A 5 watt source emits monochromatic light of wavelength 5000Å. When placed
A 5 watt source emits monochromatic light of wavelength 5000Å. When placed 0.5 m away, it liberates photoelectrons from a…
7 years ago
A source of light is placed at a distance of 50 cm from a photocell and the stopping
A source of light is placed at a distance of 50 cm from a photocell and the stopping potential is…
7 years ago
A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm
A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm. Assuming it to be 25% efficient in…
7 years ago
What is the energy of photon whose wavelength is 6840 Å?
What is the energy of photon whose wavelength is 6840 Å? Options (a) (1.81 eV) (b) (3.6 eV) (c) (-13.6…
7 years ago