Ch#17 - Advent of Modern Physics | Past Paper Numerical Solution | 2019 -2010

Описание: 2019
Q.2 (xv) What will be the velocity and momentum of a particle whose rest mass is mo and kinetic energy is equal to twice of its rest mass energy?

2018
2(xiv) A photon of wavelength 0.004 A0 in the vicinity of a heavy nucleus produces an electron positron pair. Find the kinetic energy of each particle in MeV, is the kinetic energy of positron is twice that of electron. (m_0 c^2=8.19 ×〖10〗^(-14) J h=6.63 ×〖10〗^(-34) Js and c=3×〖10〗^8 m/s)

2017
Q.2 (vi) X-rays of wavelength 3.64 x 10-10 m are used in Compton scattering process. Find the fractional change in wavelength for a scattering angle of 120°. (Give h = 6.63x10-34Js, m0=9.1x10-31kg, c = 3 x108m/ s)

2016
Q.2 (vi) Textbook Numerical 17.13

2015
Q.2(iv) Same as 2019 Q.2 (xv)

2014
Q. 2(iv) Same as 2019 Q.2 (xv)
Q. 2(ix) In a TV picture tube, an electron is accelerated by a potential difference of 12000 V. Determine the de Broglie’s wavelength given that h = 6.63 x 10-34 JS, e=1.6 x 10-19 coulomb m= 9.11 x 10-31kg

2013
Q.2 (vi) Pair annihilation occurred due to a head-on-collision of an electron and a positron having the same kinetic energy, producing pair of photons each having of 2.5 MeV. What were their kinetic energies before collision? Given moc2 = 0.511 MeV.

2012
Q.2(iv) Textbook Numerical 17.3
Q.2(xv) Textbook Numerical 17.13

2011
Q.2 (xii) Same as 2019 Q.2 (xv)
Q.2 (xv) Textbook Numerical 17.15

2010
Q.2(xiv) Textbook Numerical 17.15
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