Physics question and answers for October 14, 2023
- Q Example An equilateral triangle is moved parallel to its plane in two ways In first case it is given a speed 3c parallel to bisector of angle 2 C parallel...
- Q 17 Light with an energy flux of 18 W cm on a non reflecting surface at normal incidence If the surface has an area of 20 cm Find the average...
- Q 9 A sheet of silver is illuminate by monochromatic ultraviolet radiations of wavelength 1810 What is the maximum energy of the emitted electron The threshold wavelength of silver is 2640...
- Q Photoelectric effect experiments are performed using three different metal plates p q and r having work functions p 2 0 eV q 2 5 eV and r 2 0 eV...
- Q A totally reflecting small plane mirror placed horizontally faces a parallel beam of light as shown in figure The mass of mirror is 20 gm Assume that there is no...
- Q 1 1 2 2 3 3 4 4 4 Five elements A B C D and E have work functions 1 2 eV 2 4 eV 3 6 eV 4...
- Q 18 When ultraviolet light of wavelength 100 nm is incident upon a sample of silver metal a potential difference of 7 7 volt is required to stop the photoelectrons from...
- Q electron is accelerated through a potential difference v 1 of its kinetic energy converts into on X ray photon which falls on a photosensitive plate The maximum kinetic energy of...
- Q In an experiment on photoelectric effec t a photon is incident on an electron fr om one direction and the photoelectron is emitted almost in opposite direction Does this violate...
- Q 1 2 Question Type Single Correct Type 3 Retarding 4 O A C D Potential V Accelerating Beam B has highest frequency Photoelectrons ejected by beam B have momentum greater...
- Q A photosensitive metallic surface has work function Eo If photons of energy 5E0 fall on this surface the electrons come out with a maximum velocity of 4 x 106 m...
- Q If light of wavelength 3100 is used in the experiments then following graph is observed Photocurrent A Threshold wavelength is 620 nm C Threshold wavelength is 310 nm 2 ol...
- Q The maximum velocity of emitted by light of wavelength the surface of a metal of work function is Question Type Single Correct Type 1 2 3 2 hc Xo mx...
- Q Q No 100 The wavelength Ae of an electron and Ap of a photon of same energy E are related by 1 2 3 Correct Answer 2 Your Answer 3...
- Q The light photons of energy 1 eV and 2 5 eV respectively are made incident on metallic plate of work function 0 5 eV one after another The ratio of...
- Q Photoelectric emission is observed from a metallic surface for frequencies v and v of V2 the incident light rays v V If the maximum values of kinetic energy of the...
- Q Exercise 1 Electrons are accelerated by the voltage U 150 V Calculate the wavelength of the electrons e 1 6 10 C m 9 1 10 kg h 6 625...
- Q Consider the two following statements I and II and identify the correct choice given in the answers 1 In photovoltaic cells the photoelectric current produced is not proportional to the...
- Q When monochromatic radiation of intensity I falls on a metal surface the number of photoelectron and their maximum kinetic energy are N and T respectively If the intensity of radiation...
- Q 15 For ion of metal match the following colum A B C Line Column 1 Slope of line 1 Slope of line 2 Line 2 Colume P Q 6 c...
- Q In an experiment on photoelectric effect of the incident radiation is of the incident radiation is red wavelength wavelength tord of the initial value and the maxi kinetic energy of...
- Q experiment is carried out in which li one on a photocell whose plate cathode work function of 1 5 eV Two seri easurements were performed For the easurement light has...
- Q Find the maximum magnitude of the linear momentum of a photoelectron emitted when light of wave length 400 nm falls on a metal having work function 2 5 eV 1...
- Q In a photoelectric effect experiment photons of energy 13eV are incident on a metal of work function 0 9 eV due to which photoelectrons are emitted from metal Energy of...
- Q d 20 Let K be the maximum K E of photo electrons emitted by light of wavelength A and and K coresponding to wavelength A If K 2K then 1...
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