All components of the electromagnetic spectrum in vacuum have the same
All components of the electromagnetic spectrum in vacuum have the same Options (a) Energy (b) Velocity (c) Wavelength (d) Frequency…
7 years ago
Dual Nature of Matter and Radiation
The minimum wavelength of X-rays emitted by X-ray tube is 0.4125Å
The minimum wavelength of X-rays emitted by X-ray tube is 0.4125 Å. The accelerating voltage is Options (a) 30 kV…
7 years ago
A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons
A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons does it emit per second Options…
7 years ago
Sodium and copper have work function 2.3 eV and 4.5 eV respectively
Sodium and copper have work function 2.3 eV and 4.5 eV respectively. The ratio of their threshold wavelengths is nearest…
7 years ago
A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity of 3…
7 years ago
The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg)
The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg) accelerated through a…
7 years ago
The potential difference applied to an X-ray tube is 5 kV and the current through it
The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. The…
7 years ago
The de-Broglie wavelength of an electron having 80 eV of energy is nearly
The de-Broglie wavelength of an electron having 80 eV of energy is nearly(Given 1 ev= 1.6 x 10⁻¹⁹ kg, Mass…
7 years ago
A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal
A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal whose work function is…
7 years ago
The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength of the series is Options (a) 121.6 nm…
7 years ago