Physics question and answers for October 13, 2023
- Q Threshold wavelength of a metal surface is 5 10 7 m When it is illuminated by light of wavelength 3 x 10 7m stopping potential is Vo what will be...
- Q In a photoelectric effect experiment the stopping potential is 1 37 V if the light used to illuminate the cathode has wavelength 475 nm Find the work function in eV...
- Q Question Type Single Correct Type 1 Does not depend on the frequency of the incident light 2 Does not depend on nature of cathode material Depends on both the frequency...
- Q If the radiations of wavelength 3100 and 6200 are incident on a substance of work function 1eV one by one then the ratio of the stopping potentials for the emitted...
- Q The plots of intensity versus wavelength for three black bodies at temperature T T2 and T3 respectively are as shown in figure their temperature are such that O T T...
- Q velength of matter waves is also determined by using kinetic energy as formula is h 2mE If you double the kinetic energy of a particle how does the deBroglie wavelength...
- Q Ho 7 View In English A black body is at a temperature of 5760 K The energy of radiation emitted by the body at wavelength 250 nm is U at...
- Q Viow In English An intense light source radiate uniformly in all directions At a distance of 5 0 m from the source the radiation pressure on the perfectly absorbing surface...
- Q 1 32x cm s Sodium and Copper have work functions 2 3 eV and 4 5 eV respectively Then the ratio of the threshold wavelengths is nearest to 1 1...
- Q lustration 7 Light quanta with an energy 4 9 eV eject photoelectrons from metal with work function 4 5 eV Fir the maximum impulse transmitted to the surface of the...
- Q In scenario C visible light is yellow Determine its wavelength frequency and energy per photon frequency In scenario D visible light has a photon energy of 4 274 x 10...
- Q YOU DIDN T ATTEMPT Three photons of energy 5eV 6eV 7eV are incident on metal having work function 3eV The maximum kinetic energy of emitted photoelectrons is 2eV 3eV 4eV...
- Q 3 An X ray photon of frequency 3 10 19 Hz collides with a free electron a rest and is scattered at 60 degrees Find the direction in which the...
- Q Fant Size A TA TA The work function of copper surface is 45 eV The threshold wavelength for photoelectric effect from the surface of copper is Planck s constant h...
- Q parallel plates are connected across the terminal of 100 V power supply These plates have a fine hole at the centre An electron having energy 200 eV is so directed...
- Q JULI mature or kadiation and Matter The threshold wavelength of lithium is 8000 When light of wavelength 9000 is made incident on it then the photoelectrons 1 Will not be...
- Q notons with a wavelength of 459 nm in air enter a plate of crown glass with index of refraction n 1 52 Find the speed wavelength and energy of a...
- Q velocities of the photo electrons coming out are V and v respectively then 1 2 3 V V 4 V V 2h 1 1 m f f 2h f f...
- Q 1 An electron in the hydrogen atom jumps from excited state n to the ground state The wavelength so emitted illuminates a photosensitive material having work function 2 75 eV...
- Q Figure shows some energy levels of an electron in H atom E Which among the following transitions produces photon of wavelength in visible region of electromagnetic spectrum E E E3...
- Q The voltage applied to an X ray tube is 9 kV The mass corresponding to maximum energy of photon emitted by X ray tube will be 1 6 10 1...
- Q Two metallic plates P and Q are separated by a distance of 0 1 M These are connected through an ideal ammeter as shown in the figure A magnetic field...
- Q 5 volt In the photoelectric experiment if we use a monochromatic light the 1 V curve is as shown If work function of the metal is 2 eV estimate the...
- Q 12 Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface The ratio of the maximum velocity...
- Q Determine the initial energy of the photon MeV Round your result to 3 decimal place Answer MeV on eat b Calculate the maximum energy loss AE in MeV if this...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!