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Physics · 2009 · Shift 0

29 questions from this JEE Main paper

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2009 · Shift 0
Physics

Physics · 2009 · Shift 0

29 questions from this JEE Main paper

Electronic Devices2 questions Atoms and Nuclei2 questions Dual Nature of Radiation1 questions Geometrical Optics2 questions Alternating Current1 questions Wave Optics1 questions Magnetics2 questions Electrostatics4 questions Motion in A Straight Line1 questions Waves1 questions Simple Harmonic Motion1 questions Heat and Thermodynamics6 questions Properties of Matter1 questions Gravitation1 questions Rotational Motion1 questions Motion in A Plane1 questions Units and Measurements1 questions

Q48.The logic circuit shown below has the input waveforms $^{'} A^{'}$ and $^{'} B^{'}$ as shown. Pick out the correct output waveform. Output is Includes diagram
Physics · Electronic Devices · MCQ
Q49.A $p$ - $n$ junction $(D)$ shown in the figure can act as a rectifier. An alternating current source $(V)$ is connected in the circuit. The current $(I)$ in the resistor $(R)$ can be shown by : Includes diagram
Physics · Electronic Devices · MCQ
Q50.The above is a plot of binding energy per nucleon $E_{b},$ against the nuclear mass $M; A, B, C, D, E, F$ correspond to different nuclei. Consider four reactions : $(i) A + B \to C + ε (ii) C \to A + B + ε (iii) D + E \to F + ε (i v) F \to D + E + ε,$ … Includes diagram
Physics · Atoms and Nuclei · MCQ
Q51.The surface of a metal is illuminated with the light of $400 nm .$ The kinetic energy of the ejected photoelectrons was found to be $1.68 e V .$ The work function of the metal is : $(h c = 1240 e V . nm)$
Physics · Dual Nature of Radiation · MCQ
Q52.The transition from the state $n = 4$ to $n = 3$ in a hydrogen like atom result in ultra violet radiation. Infrared radiation will be obtained in the transition from :
Physics · Atoms and Nuclei · MCQ
Q53.A transparent solid cylindrical rod has a refractive index of $\frac{2}{3} .$ It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle $θ$ for which the… Includes diagram
Physics · Geometrical Optics · MCQ
Q54.An inductor of inductance $L = 400 m H$ and resistors of resistance $R_{1} = 2Ω$ and $R_{2} = 2Ω$ are connected to a battery of $e m f 12 V$ as shown in the figure. The internal resistance of the battery is negligible. The switch $S$ is… Includes diagram
Physics · Alternating Current · MCQ
Q55.In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance $u$ and…
Physics · Geometrical Optics · MCQ
Q56.A mixture of light, consisting of wavelength $590 nm$ and an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it…
Physics · Wave Optics · MCQ
Q57.A current loop $A B C D$ is held fixed on the plane of the paper as shown in the figure. The arcs $B C$ (radius $= b$ ) and $D A$ (radius $= a$ ) of the loop are joined by two straight wires $A B$ and $C D$ . A steady current $I$ is flowing in the… Includes diagram
Physics · Magnetics · MCQ
Q58.A current loop $A B C D$ is held fixed on the plane of the paper as shown in the figure. The arcs $B C$ (radius $= b$ ) and $D A$ (radius $= a$ ) of the loop are joined by two straight wires $A B$ and $C D$ . A steady current $I$ is flowing in the… Includes diagram
Physics · Magnetics · MCQ
Q59.Two points $P$ and $Q$ are maintained at the potentials of $10 V$ and $- 4 V$ , respectively. The work done in moving $100$ electrons from $P$ to $Q$ is :
Physics · Electrostatics · MCQ
Q60.Consider a rubber ball freely falling from a height $h = 4.9 m$ onto a horizontal elastic plate. Assume that the duration of collision is negligible and the collision with the plate is totally elastic. Then the velocity as a function of time…
Physics · Motion in A Straight Line · MCQ
Q61.(This question contains Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.) Statement-1 : For a charged particle moving from point $P$ to point $Q$ , the net…
Physics · Electrostatics · MCQ
Q62.A charge $Q$ is placed at each of the opposite corners of a square. A charge $q$ is placed at each of the other two corners. If the net electrical force on $Q$ is zero, then $Q / q$ equals:
Physics · Electrostatics · MCQ
Q63.Let $P (r) = \frac{Q}{π R ^{4}} r$ be the change density distribution for a solid sphere of radius $R$ and total charge $Q$ . For a point $^{'} p^{'}$ inside the sphere at distance $r_{1}$ from the center of the sphere, the…
Physics · Electrostatics · MCQ
Q64.Three sound waves of equal amplitudes have frequencies $(v - 1), v, (v + 1) .$ They superpose to give beats. The number of beats produced per second will be :
Physics · Waves · MCQ
Q65.If $x, v$ and $a$ denote the displacement, the velocity and the acceleration of a particle executing simple harmonic motion of time period $T,$ then, which of the following does not change with time?
Physics · Simple Harmonic Motion · MCQ
Q66.Two moles of helium gas are taken over the cycle $A B C D$ , as shown in the $P$ - $T$ diagram. The net work done on the gas in the cycle $A B C D A$ is: Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q67.Two moles of helium gas are taken over the cycle $A B C D,$ as shown in the $P$ - $T$ diagram. The work done on the gas in taking it from $D$ to $A$ is : Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q68.Two moles of helium gas are taken over the cycle $A B C D,$ as shown in the $P$ - $T$ diagram. Assuming the gas to be ideal the work done on the gas in taking it from $A$ to $B$ is : Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q69.A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature $θ$ along the length $x$ of the bar from its hot end is best described by which of the following figures?
Physics · Heat and Thermodynamics · MCQ
Q70.One $k g$ of a diatomic gas is at a pressure of $8 \times 1 0^{4} N / m^{2} .$ The density of the gas is $4 k g / m^{3}$ . What is the energy of the gas due to its thermal motion ?
Physics · Heat and Thermodynamics · MCQ
Q71.Statement - 1: The temperature dependence of resistance is usually given as $R = R_{0} (1 + α Δ t) .$ The resistance of wire changes from $100Ω$ to $150Ω$ when its temperature is increased from $2 7^{\circ} C$ …
Physics · Heat and Thermodynamics · MCQ
Q72.Two wires are made of the same material and have the same volume. However wire $1$ has cross-sectional area $A$ and wire $2$ has cross-sectional area $3 A .$ If the length of wire $1$ increases by $Δ x$ on applying force $F,$ how much…
Physics · Properties of Matter · MCQ
Q73.The height at which the acceleration due to gravity becomes $\frac{g}{9}$ (where $g =$ the acceleration due to gravity on the surface of the earth) in terms of $R,$ the radius of the earth, is:
Physics · Gravitation · MCQ
Q74.A thin uniform rod of length $l$ and mass $m$ is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is $ω$ . Its center of mass rises to a maximum height of:
Physics · Rotational Motion · MCQ
Q75.A particle has an initial velocity $3 i + 4 j$ and an acceleration of $0.4 i + 0.3 j$ . Its speed after 10 s is:
Physics · Motion in A Plane · MCQ
Q76.In an experiment the angles are required to be measured using an instrument, 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half-a degree(= $0. 5^{\circ}$ …
Physics · Units and Measurements · MCQ