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@), Aakash, , CODE, Medical IIT-JEE| Foundations, (Deesore of Aakash E tecatonst Sereore Ut |, Regd. Office : Aakash Tower, Plot No.-8, Pusa Road, New Delhi-110005, Ph.: 011-47623456, MM : 720 Practice Test-01 for ATATS-04 Time :3 Hrs., , , , Topics Covered:, Physics: Dual Nature of Matter and Radiation, Atoms and Nuclei, Electronic Devices (90 Question), Zoology —: Biotechnology - Its Principles and Processes ; Biotechnology and its Applications (90 Question), , , , Instructions:, (i) Use ball point pen only to darken the appropriate circle., (i) Mark should be dark and should completely fill the circle., (@) Dark only one circle for each entry., §v) Dark the circle in the space provided only,, () Rough work must nat be done on the Answer sheet and do not use white-fluid or any other rubbing material on, Answer sheet., (M) Each question carries 4 marks. For every wrang response 1 mark shall be deducted from total score., , , , , , , , Choose the correct answer :, 1. The ratio of the radii of nuclei having atomic mass 4. A hydrogen atom at rest emits a photon af frequency, number 8 and 64 is v. If mass af hydrogen atam is m, then the recoil, energy of hydrogen atom, 1 1, M5 (2) 75 ry? re, 2 V2 si, ) ome @ ne, 1, (3) (4) 22 in? 2hme*, 22, 8) 2mc* 4) v, , 2. Which of the pair of nuclei are isotones?, 5. In a spontaneous nuclear reaction x + y > 2,, , (1) He, aHet masses of x, y, Zare m,, m,, m, respectively, then, (2) ,0"8, .N™ which of the following is true?, (3) ,,Se%, ,,Ga” (1) m, +m,=m, (2) m,+m,<m,, (4) Ca", .N'* (3) m,=m,-m, (4) m,<m,+m,, , 3. If the wavelength associated with photon is 3000 A, 6 ~—_An electron is accelerated by a potential difference, then the energy of photon is af 10 kV. The de-Broglie wavelength of electron is, (1) 4.14eV (2) 3.24eV (1) 1.226 pm (2) 12.26 pm, (3) 6.24eV (4) 454 eV (3) 122.6 pm (4) 1226 pm, , 1]

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Practice Test-01 for AIATS-04 (Code A), , 7., , 10., , 1., , 12., , Angular momentum of a electron revalving in 4th, orbit is, T 2n, M5 a>, 2h Ah, 8) 4 >, , The shortest wavelengths of Balmer series of, hydrogen atom is (R= 1.1 x 10’ m“*), , (1) 1012A (2) 5080 A, (3) 6000 A (4) 3636 A, , Speed of an electron in hydrogen atom in 1st orbit, is 2 x 10° m/s. The velocity of an electron in 2nd, orbit of doubly ionized lithium is, , (1) 3x 10° mis, , 1, (2) 3 * 10° mis, , (3) 10° mis, (4) 6 x 10° mis, , K, U, E are kinetic energy, potential energy and, total energy of an electron in an orbit in single, , electron atom, then, (1) «lI (2) E=-K, 2, () E=2uU (4) Both (1) & (2), , If the potential energy of first orbit is taken to be zero, in hydrogen atom, then kinetic energy of second, orbit will be, , (1) 34eV (2) 13.6eV, (3) 15eV (4) 7.3eV, , The work functions for three different metals A, B, and C are W,, W, and W,. respectively with, W, > W, > W,. The graph between stopping, potential (V,) and frequency (v) of incident radiation, , , , is, V4 ABC V+ CBA, (1) (2), -v v, v, V,, Ap a Cy, Cc A, 3) (4), Vv v, , , , , , , , 13,, , 14., , 15., , 16., , 17., , 18., , One Year Medical - 2021, , K is the kinetic energy and 2 is de-Broglie, wavelength of the particle, then graph between, 22 and Kis, , z, (1), , 4, , (2), , +, , , , ™, ™., , 8) (4), , K K, In a photo-emissive cell, with exciting wavelength 4,, the fastest electron has speed v. If the exciting, , , , , , , , >, , ah, wavelength is changed to & then the speed ofthe, fastest emitted electron will be, , 3 v2 4 v2, 0 43) ® (3), 2, , ©) Less than v4) (4) Greater than (4), , if wavelength of photon is %., then momentum of, photon is, 4 A, We Qo, h he, OZ 4) >, , A monochromatic source of light is placed at a, distance d from a metal surface. Photoelectrons are, ejected at rate n, kinetic energy being E. If the, , source is brought nearer to distance ¢. the rate, , and kinetic energy per photoelectron become, (1) 2nand 2E (2) 4nand 4E, (3) 4nand E (4) nand 4E, , A particle of mass M at rest decays into two, particles of masses M, and MM, having non-zero, velocities, The ratio of the de-Broglie wavelengths of, the particles 1, : 2, is, , im, m,, 4) in 2) ™, ® mt ast, The ratio of wavelength of an electron revolving in 3rd, orbit to that of revolving in 5th orbit in H atom is, (1) 3:5 (25:3, (3) 2:3 (4) 2:5

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One Year Medical - 2021, , Practice Test-01 for AIATS-04 (Code A), , , , 19., , 21., , Which of the following phenomenon is used by, Davisson and Germer to show the wave nature of, electron?, , (1) Interference (2) Diffraction, (3) Polarization (4) Refraction, , Consider a radioactive material of half life 1 minute., if one of the nuclei decays now, the next one will, decay, , (1) After 1 minute, , (2) After az minute, , {1, , \w, (N= number of nuclei present at that moment), , (4) After any time, , The ratio of magnetic field produced by an electron, revolving in first orbit of H atom to that of the ‘st, orbit of Lit? atom is, , (3) After } minute, , > 27, , 1, @ 9 4) 9, The ratio of specific charge of an c-particle to that, of a proton is nearly, () 3:4 (21:3, @) 2:1 (4) 1:2, , An electron jumps from 4" excited state to 1* orbit, in a single electron atom. The number of spectral, lines observed is, , (1) 3 (2) 6, , 3) 8 (4) 10, , Which of the following particle is called lepton?, (1) Electron (2) Neutrino, , (3) Positron (4) All of these, , The binding energy per nucleon for deuteron {,H7), and helium (,He*) are 1.1 MeV and 7.0 MeV, respectively. The energy released when two, deuterons fuse to form a helium nucleus Het is, , (1) 26.3 Mev (2) 23.6 MeV, (3) 26.3 eV (4) 23.6 eV, In the nuclear reaction, , oC" —> Bl + X + Vinewwinn), , What does X stand for?, , (1) Electron (2) Positron, (3) Proton (4) Neutron, , H., , Fast neutrons can easily be slowed down by, , (1) Applying a strong electric field, , (2) Elastic collision with heavy nuclei, , (3) Passing them through heavy water, , (4) The use of load shielding, , u-particle, B-particle and y-rays each having an, energy of 1 MeV. Which of the following has highest, penetrating power?, , Me (2) B, , (8) y (4) Same for all, , A radioactive material has half lives of t, and £, years, for a and f} emission respectively. The material, decays by simultaneous a and ff emissions, The, effective half life of substance is, , 5*o te, (tt @ a+n, @ Whe w 45%, , A radioactive isotope X with a half-life of 1.37 x 108, years decays to Y which is stable. A sample of, rocks from the moon was found to contain both the, elements X and Y which were in the ratio 1; 7, The, age of the rock is, , (1) 1.96 x 10? years (2) 3.85 x 10° years, , (3) 4.11% 10% years = (4): 9.59 x 10° years, What is the power gain in CE amplifier, where input, resistance is 3 kQ and load resistance 24 kQ, given, B = 20?, , (1) 1800 (2 3200, (3) 2400 (4) 4800, Energy gap in silicon crystal is, , (1) 1.4eV (2) 0.7 eV, 3) 06 ev (4) 1.51eV, , Which of the following diode is forward biased?

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Practice Test-01 for AIATS-04 (Code A), , 3., , Voltage gain of CE amplifier is 1000. If the input, voltage V, = (.002 V) sin(3144 then the output, voltage is, , (1) 2Vsin (314t- x) (2) 2Vsin 314¢, , (3) 2Vcos 314¢ (4) All of these, , The depletion region in an open circuited of P-N, junction has, , (1) Electrons, , (2) Holes, , (3) Immobile impurity ions, , (4) Neutralised impurity atoms, , Which of the following p-n junction is not used in, reverse bias?, , (1) LED (2) Solar cell, (3) Zener diode (4) Both (1) & (2), The output across PQ is, , Input, , ac. ©, , , , , , (1) Half wave rectified (2) Full wave rectified, (3) Quarter wave rectified (4) A.C. wave rectified, , Logic gate realised from p-n junctions shown in the, figure, , , , , , , , , , dD,, Ae—_ >t, *¥, Be et, . R, (1) NOR gate (2) AND gate, (3) NOT gate (4) OR gate, , With fall of temperature, the energy gap of a, semiconductor?, , (1) Increases, , (2) Decreases, , (3) Remains unchanged, , (4) Sometime increase and sometime decrease, , 4, , 41,, , One Year Medical - 2021, , Three amplifiers each having valtage gain 100 are, connected in series, the resultant gain would be, , , , 100, , 3 @ 300, , (3) 107 (4) 108, , The following configuration of gate is equivalent to, PRT -", e—D>—, , (1) NAND (2) OR, , (3) NOR (4) AND, , Ge diode conduct at 0.3 V. In the given circuit the, value of fis, , , , , , , , , , Ge 5 KO, |, if, {5, 12V, v, , (1) Zero (2 234mA, (3) 1.34 mA (4) 226 mA, , 43, Ina transistor, , 45., , 46., , (1) Length of emitter is greater than collector, (2) Length of collector is greater than emitter, (3) Length of base is greater than emitter, , (4) Length of base is greater than collector, , In n-p-n transistor circuit, the collector current is, 10 mA. If 90% of electrons emitted reach the, collector, The emitter current will be, , (1) 0.4 mA (2) 1mA, , (3) 11mA (4) 9mA, , Which of the following is a universal logic gate?, (1) OR (2) NAND, , (3) NOR (4) Both (2) & (3), , A photon and an electron possess same de-Broglie, wavelength. Given that c = speed of light and, v = speed of electron, Then the ratio of K.E. of, electron to K.E. of photon is, , (2), , v, , a), , Cc, v, , (3), , y (4)

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One Year Medical - 2021, , Practice Test-01 for AIATS-04 (Code A), , , , 47., , 49., , 51., , The electric field associated with a light wave, E = E, sin [1.57 x 10” (x— cf], where x is in metre, tis in second. If this light is used ta produce phatoelectric emission from the surface of a metal of work, function 1.9 eV, then the stopping potential will be, , (1) 1.2V (2) 1.5, (@) 1.75 (4) 1.9, , The threshold wavelength for a metal of work function, w, is 2. The threshold wavelength for a metal having, work function 3 w, will be, , (% (2), , @ 4 r, If the wavelength associated with photon is 4500 A, then energy of photon is, , (1) 1.75 eV (2) 275 eV, , (3) 2eV (4) 3eV, , The de-broglie wavelength of a gas molecule of mass, m at temperature Tin Kelvin) is 4, then graph, , between ? and T is, , i> Ni>, , h a, , () (2), UT, , (3) (4), , AT iT, , The threshold wavelength for photoelectric emission, from a material is 5000 A. Photoelectrons will be, emitted when this material is illuminated with monochromatic radiation from a, , (1) 50 watt infrared lamp, , (2) 50 watt ultraviolet lamp, , (3) 1 watt ultraviolet lamp, , (4) Both (2) & (3), , Work function of lithium and copper are respectively, 2.3 eV and 4 eV. Which one of the metals will be, useful for the photoelectric cell working with visible, light?, , (1) Copper (2) Lithium, , (3) Both (1) & (2) (4) None of these, , The graph between the stopping potential (V,) and, , , , , , §7., , (2) of three metals are shown in figure. Ultraviolet, , light beam (3500 A) is incident on the metal plates., The emission of electron is possible from, , v,, , , , 402. {(nen"], , 0.001 0.002, (1) Metal plate 1 only, (2) Metal plate 2 only, (3) Metal plate 3 only, (4) Metal plate 1 and 2 both, , 0.004, , Rest mass of photon is (symbols have usual, meaning), , (1) Infinite (2) =, to, 8 > (4) Zero, , Maximum velccity of the photoelectrons emitted by a, metal surface is 12 x 10° m/s. Assuming the specific, charge of the electron to be 1.8 x 10" C/kg, the value, af the stopping potential in volt will be, , (1) 6 24, , 8) 3 (4) 2, , If longest wavelength of Balmer series of H atom is, i. then shortest wavelength of Lyman series will be, , () A @ 3h, 36 9, @) 54 () 5h, , The total energy of the electron in the hydrogen atom, in the ground state is — 13.6 eV. The kinetic energy, of the electron is, , (1) 13.6eV (2) Zero, (3) - 13.6 eV (4) 6.8 eV, , The ionisation potential of hydrogen is 13.6 volt. The, energy of the electron in n = 2 state will be, , (1) - 10.2 eV (2) -64eV, (3) -44eV (4) -34eV, , The angular speed of the electron in the n® arbit of, Bohr hydrogen atom is, , (1) Directly proportional to n, (2) Inversely proportional ta 7, , (3) Inversely proportional to 1°, (4) Inversely proportional to n°