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Physics · 2023 · 6 Apr · Shift 1

28 questions from this JEE Main paper

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2023 · 6 Apr · Shift 1
Physics

Physics · 2023 · 6 Apr · Shift 1

28 questions from this JEE Main paper

Circular Motion2 questions Electromagnetic Induction1 questions Electronic Devices2 questions Motion in A Plane1 questions Heat and Thermodynamics2 questions Properties of Matter2 questions Gravitation2 questions Dual Nature of Radiation1 questions Geometrical Optics2 questions Magnetics2 questions Simple Harmonic Motion1 questions Units and Measurements1 questions Electromagnetic Waves1 questions Atoms and Nuclei2 questions Electrostatics1 questions Rotational Motion1 questions Work Power and Energy1 questions Current Electricity1 questions Capacitor1 questions Alternating Current1 questions

Q43.A particle is moving with constant speed in a circular path. When the particle turns by an angle $9 0^{\circ}$ , the ratio of instantaneous velocity to its average velocity is $π : x 2$ . The value of $x$ will be -
Physics · Circular Motion · MCQ
Q44.The induced emf can be produced in a coil by A. moving the coil with uniform speed inside uniform magnetic field B. moving the coil with non uniform speed inside uniform magnetic field C. rotating the coil inside the uniform magnetic field…
Physics · Electromagnetic Induction · MCQ
Q45.Name the logic gate equivalent to the diagram attached Includes diagram
Physics · Electronic Devices · MCQ
Q46.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A : When a body is projected at an angle $4 5^{\circ}$ , it's range is maximum. Reason R : For maximum range, the value of $sin 2 θ$ …
Physics · Motion in A Plane · MCQ
Q47.A source supplies heat to a system at the rate of $200 W$ . If the system performs work at a rate of $200 W$ . The rate at which internal energy of the system increases is
Physics · Heat and Thermodynamics · MCQ
Q48.A small ball of mass $M$ and density $ρ$ is dropped in a viscous liquid of density $ρ_{0}$ . After some time, the ball falls with a constant velocity. What is the viscous force on the ball ?
Physics · Properties of Matter · MCQ
Q49.A small block of mass $7.5 N / m$ is tied to a spring of spring constant $7.5 N / m$ and length $20 cm$ . The other end of spring is fixed at a particular point A. If the block moves in a circular path on…
Physics · Circular Motion · MCQ
Q50.Given below are two statements : one is labelled as Assertion $A$ and the other is labelled as Reason $R$ . Assertion A : Earth has atmosphere whereas moon doesn't have any atmosphere. Reason R : The escape velocity on…
Physics · Gravitation · MCQ
Q51.The kinetic energy of an electron, $α$ -particle and a proton are given as $4 K, 2 K$ and $K$ respectively. The de-Broglie wavelength associated with electron $(λ e), α$ -particle $((λ α)$ …
Physics · Dual Nature of Radiation · MCQ
Q52.A monochromatic light wave with wavelength $λ_{1}$ and frequency $v_{1}$ in air enters another medium. If the angle of incidence and angle of refraction at the interface are $4 5^{\circ}$ and $3 0^{\circ}$ respectively, then the…
Physics · Geometrical Optics · MCQ
Q53.A long straight wire of circular cross-section (radius a) is carrying steady current I. The current I is uniformly distributed across this cross-section. The magnetic field is
Physics · Magnetics · MCQ
Q54.A planet has double the mass of the earth. Its average density is equal to that of the earth. An object weighing $W$ on earth will weigh on that planet:
Physics · Gravitation · MCQ
Q55.A mass $m$ is attached to two strings as shown in figure. The spring constants of two springs are $K_{1}$ and $K_{2}$ . For the frictionless surface, the time period of oscillation of mass $m$ is : Includes diagram
Physics · Simple Harmonic Motion · MCQ
Q56.Two resistances are given as $R_{1} = (10 \pm 0.5) Ω$ and $R_{2} = (15 \pm 0.5) Ω$ . The percentage error in the measurement of equivalent resistance when they are connected in parallel is -
Physics · Units and Measurements · MCQ
Q57.For the plane electromagnetic wave given by $E = E_{0} sin (ω t - k x)$ and $B = B_{0} sin (ω t - k x)$ , the ratio of average electric energy density to average magnetic energy density is
Physics · Electromagnetic Waves · MCQ
Q58.The resistivity $(ρ)$ of semiconductor varies with temperature. Which of the following curve represents the correct behaviour :
Physics · Electronic Devices · MCQ
Q59.The energy levels of an hydrogen atom are shown below. The transition corresponding to emission of shortest wavelength is : Includes diagram
Physics · Atoms and Nuclei · MCQ
Q60.The number of air molecules per cm $^{3}$ increased from $3 \times 1 0^{19}$ to $12 \times 1 0^{19}$ . The ratio of collision frequency of air molecules before and after the increase in number respectively is:
Physics · Heat and Thermodynamics · MCQ
Q61.For a uniformly charged thin spherical shell, the electric potential (V) radially away from the centre (O) of shell can be graphically represented as - Includes diagram
Physics · Electrostatics · MCQ
Q62.The radius of fifth orbit of the $Li^{++}$ is $\times 1 0^{- 12} m$ . Take: radius of hydrogen atom $= 0.51 A o$
Physics · Atoms and Nuclei · Numerical
Q63.Two identical solid spheres each of mass $10 cm$ and radii $40 cm$ are fixed at the ends of a light rod. The separation between the centres of the spheres is $40 cm$ . The moment of inertia of the system about…
Physics · Rotational Motion · Numerical
Q64.A steel rod has a radius of $2.0 m$ and a length of $62.8 kN$ . A force of $2.0 \times 1 0^{11} N / m^{2}$ stretches it along its length. Young's modulus of steel is $2.0 \times 1 0^{11} N / m^{2}$ . The longitudinal…
Physics · Properties of Matter · Numerical
Q65.Two identical circular wires of radius $2 A$ and carrying current $2 A$ are placed in perpendicular planes as shown in figure. The net magnetic field at the centre of the circular wires is … Includes diagram
Physics · Magnetics · Numerical
Q66.A pole is vertically submerged in swimming pool, such that it gives a length of shadow $3 0^{\circ}$ within water when sunlight is incident at angle of $3 0^{\circ}$ with the surface of water. If swimming pool is filled to a height of $1.5 m$ …
Physics · Geometrical Optics · Numerical
Q67.A particle of mass $2 x$ moves in a straight line with retardation $2 x$ , where $x$ is the displacement in SI units. Its loss of kinetic energy for above displacement is $(\frac{10}{x})^{- n}$ J. The value of $n$ …
Physics · Work Power and Energy · Numerical
Q68.The length of a metallic wire is increased by $20%$ and its area of cross section is reduced by $4%$ . The percentage change in resistance of the metallic wire is .
Physics · Current Electricity · Numerical
Q69.A parallel plate capacitor with plate area $A$ and plate separation $d$ is filled with a dielectric material of dielectric constant $K = 4$ . The thickness of the dielectric material is $x$ , where $x < d$ . Let $C_{1}$ … Includes diagram
Physics · Capacitor · Numerical
Q70.An ideal transformer with purely resistive load operates at $120 V$ on the primary side. It supplies electrical energy to a number of nearby houses at $120 V$ . The average rate of energy consumption in the houses served…
Physics · Alternating Current · Numerical