Introductory Physics II, PHY 202 Wcite the letter for the correct answer in the

Question

Introductory Physics II, PHY 202 Wcite the letter for the correct answer in the given spaces Light is wsually thought of as wave-like in nature and lestrons as particle-ike. In which one of the tollowing using blue light used in an electro ) 4.55 eV to 1.2eV D)eV to 9.8 ev A) the photon energy of Gamma-rays B the wavelength of light waves at a double slit experiment C) the wavelength of a moving particle with mass (m) and speed () D) the wavelength of sound waves t minimum frequency are required to remove electrons from gold? Note: The work function for gold is 4.8el Hz B) 1.16 x 1O C) -10 D) periodic table has unique set of spectral lines. Which one of the following statements is the best A) Each atom has a dense C) The electrons in atoms are in constant B) Each atom has a unique set of energy levels D) Each atom has a nucleus which can decay spontaneously nucleus motion. For the emission line spectrum of Hydrogen atoms, determine the shortest wavelength in the Balmer series D) 820mm E) 1875am metal surface. Photoelectrons with a kinetic energy of 2.5 ev Ultraviolet light with a wavelength of 250 am strikes a are ejected from the metal What is the workfunction of the metal? A) 2.47eV B)S.SeV C)1.05 eV D) 3.Sev 9Assume an atom has two energy levels with E1.JeVand E2.SeV. What is the waveleng th emitted by this atonm atom when an electron makes a transition from E, to E? C) 1036nm D) 634nm A) 532nm An electron is moving with speed 2.1x10'm/s. What is the de Broglie wavelength of this electron? B) 365mm A) 0.24 nm B)3.5m C) 656nm D)49 nm E) 3x10'nm; uations and Constants: c-3 x 10" ms (in vacuum); k-910, 0Nm2C); ?-4xx 10" Tm/A; e 1.6x10', C: mr9.1 1x10" alo.10 ; m milli lalot ? microe llo"; nananoel xio". Men egal. Rel 097x10' ni, lev-16x10", J , sin 9in 4 .(«+)? 1,2, Bright fringes of a double slit) m-aL2.3. . . (Dark fringes of a double slit);Am,4m, 21+0.saMm (rn + 0.5)ml"; with ma12.. sino-m (Dark fringes for single slit) mi 1,2,3 ; yaltan® 0.1.22 ; s-on,H; %" (5.2910 "m). 2..-(5.2910 "m) ; n 1 2.3 11.12 (-1); m -l +1; m 0.5,-0.5

Explanation / Answer

young's double slit experiment electron exhibits as a particle at ends but it acts as a wave in between the ends. It under goes diffraction and bendsBut wave is a form of pure energy and doesn't show properties of having mass as of experimental diffraction.

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