Photons: Energy, Momentum and Photon Flux

JEE Main Physics · Dual Nature of Matter and Radiation · 9 questions, latest first

• A monochromatic source of light operating at 15 kW emits 2.5 × 10^22 photons / s. The region of an electromagnetic spectrum to…20268 April, Shift 2 · Q38
• Number of photons of equal energy emitted per second by a 6 mW laser source operating at 663 nm is ____. (Given: h=6.63 × 10^-34…202628 January, Shift 2 · Q43
• Which of the following phenomena can not be explained by wave theory of light?202528 January, Shift 2 · Q44
• The ratio of the power of a light source S_1 to that the light source S_2 is 2. S_1 is emitting 2 × 10^15 photons per second at…202524 January, Shift 2 · Q50
• Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Number of…20244 April, Shift 2 · Q47
• Monochromatic light of frequency 6 × 10^14 Hz is produced by a laser. The power emitted is 2 × 10^-3 W. How many photons per…20241 February, Shift 2 · Q46
• Two sources of light emit with a power of 200 W. The ratio of number of photons of visible light emitted by each source having…202429 January, Shift 2 · Q46
• An atom absorbs a photon of wavelength 500 nm and emits another photon of wavelength 600 nm. The net energy absorbed by the atom…202313 April, Shift 2 · Q60
• If a source of electromagnetic radiation having power 15 kW produces 10^16 photons per second, the radiation belongs to a part of…202331 January, Shift 1 · Q18