Revision/ Ch7/ Q6

Revision/ Ch7/ Q6

  4:33 PM    Rohit

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Q1 Assume a certain concave, spherical mirror has a focal length of 10.0 cm. (a)   Locate the image and find the magnification for an object distance of 25.0 cm. Determine          whether the image is real or virtual, inverted or upright,...

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Revision/ Ch 8/ Q7

Revision/ Ch 8/ Q7

  10:34 PM    Rohit

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Q1 A screen is separated from a double-slit source by 1.20 m. The distance between the two slits is 0.030 mm. The second-order bright fringe (m = 2) is measured to be 4.50 cm from the centerline. Determine (a) the wavelength of the light and (b) the distance between adjacent bright fringes. [563 nm, 2.25 cm] Q2 Semiconductors such as silicon are used to fabricate solar cells, devices that...

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Revision/ Ch 9/ Q8

Revision/ Ch 9/ Q8

  12:18 AM    Rohit

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Q1 A sodium surface is illuminated with light of wavelength 0.300 mm. The work function for sodium is 2.46eV. Calculate (a)   the energy of each photon in electron volts, (b)  the maximum kinetic energy of the ejected photoelectrons, and (c)  the cut off wavelength for sodium. [4.14 eV, 1.68 eV, 505 nm] Q2 When monochromatic light of an unknown wavelength falls...

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Revision/ Ch 10/ Q9

Revision/ Ch 10/ Q9

  11:03 PM    Rohit

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Q1 (a)   If the wavelength of an electron is 5.00 ´ 10- 7 m, how fast is it moving? (b)   If the electron has a speed equal to 1.00 ´ 107 m/s, what is its wavelength? [1.46 km s-1, 7.28 ´ 10-11 m] Q2 Calculate the de Broglie wavelength of a proton moving at (a)   2.00 ´ 104 m/s and (b)   2.00 ´ 107 m/s. Q3 The resolving power of a...

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Revision/ Ch 11/ Q10

Revision/ Ch 11/ Q10

  9:47 PM    Rohit

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Q1 The nucleus of the deuterium atom, called the deuteron, consists of a proton and a neutron. Calculate the deuteron’s binding energy in MeV, given that its atomic mass, the mass of a deuterium nucleus plus an electron, is 2.014 102 u. [2.224 MeV] Q2 The half-life of the radioactive nucleus 22688Ra is 1.6 ´ 103 yr. If a sample initially contains 3.00 ´ 1016 such nuclei, determine (a)   the...

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