Cmi.sample Qp

Sample Questions–Physics The Question Paper will contain two parts. Part A will consist of Multiple Choice Questions and Part B will consist of Short Answer Questions. Some Sample Questions are given below. Part A • A ball is thrown up vertically. Its acceleration at its highest point is (a) 0 (b) g/2 downward (c) g downward (d) g/2 upward (e) g upward • A body attached to an ideal spring is having a linear harmonic oscillation about its equilibrium position with an amplitude of 1 cm. When it is 0.5 cm away from the equilibrium position the fraction of its total energy in the form of kinetic energy is (a) 1/3 (b) 3/8 (c) 1/2 (d) 2/3 (e) 3/4 • A container of fixed volume has n moles of an ideal gas. If the temperature of the gas is doubled, the pressure will change by a factor of (a) 2/nR (b) 2 (c) 2nR (d) 2/n (e) 2/R • A string of length 6 m, fixed at both ends, supports a standing wave with a total of 4 nodes. If the velocity of a transverse wave along the string is 40 m/s the frequency of the standing wave is (a) ≈ 6.7 Hz (b) 10 Hz (c) ≈ 13.3 Hz (d) 20 Hz (e) ≈ 26.7 Hz • In Young’s double-slit interference experience the difference is path lengths of the light waves from the two slits at the center of the first bright fringe above the central maximum is (a) 0 (b) λ/4 (c) λ/2 (d) λ (e) 3λ/2 • The ionization energy of a single electron atom is 25 eV. When the electron makes a transition from an excited state of energy −16 eV to the ground state the energy released is (a) 9 eV (b) 11 eV (c) 16 eV (d) 25 eV (e) 41 eV • Compared to the parent nucleus, the daughter of a β-decay has (a) the same mass number but a greater atomic number (b) the same mass number but a smaller atomic number (c) a smaller mass number but the same atomic number (d) a greater mass number but the same atomic number (e) none of the above 64 • The missing particle in the nuclear reaction 21 H + 63 29 Cu → 30 Zn + ? is (a) proton (b) neutron (c) electron (d) positron (e) deuteron

Part B • A particle of rest mass m0 is moving at a speed of energy?

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What is its kinetic

• What is the force between two free electrons spaced 10−10 m apart? • Assume that the electron has no spin. Then, in atoms there would be no spin quantum number. If the Pauli exclusion principle still holds what would be the Z-values for the first three univalent elements? • The binding energy per nucleon for 238 U is about 7.5 MeV, whereas it is about 8.5 MeV for nuclei of half that mass. If a 238 U nucleus were to split into two equal-size nuclei, about how much energy would be released in the process?

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