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Physics · 2024 · 29 Jan · Shift 1

30 questions from this JEE Main paper

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2024 · 29 Jan · Shift 1
Physics

Physics · 2024 · 29 Jan · Shift 1

30 questions from this JEE Main paper

Units and Measurements1 questions Dual Nature of Radiation1 questions Geometrical Optics2 questions Current Electricity3 questions Alternating Current1 questions Gravitation1 questions Heat and Thermodynamics2 questions Electrostatics2 questions Work Power and Energy2 questions Properties of Matter2 questions Circular Motion1 questions Electromagnetic Induction2 questions Electronic Devices1 questions Motion in A Straight Line1 questions Atoms and Nuclei2 questions Wave Optics1 questions Rotational Motion1 questions Magnetic Properties of Matter1 questions Capacitor1 questions Simple Harmonic Motion1 questions Motion in A Plane1 questions

Q61.The resistance $R = \frac{V}{I}$ where $V = (200 \pm 5) V$ and $I = (20 \pm 0.2) A$ , the percentage error in the measurement of $R$ is :
Physics · Units and Measurements · MCQ
Q62.The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is $25%$ of the velocity of light, then the ratio of K.E. of electron and K.E. of photon will be:
Physics · Dual Nature of Radiation · MCQ
Q63.A convex mirror of radius of curvature $30 cm$ forms an image that is half the size of the object. The object distance is :
Physics · Geometrical Optics · MCQ
Q64.The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of $24Ω$ is applied. The resistance of galvanometer coil will be :
Physics · Current Electricity · MCQ
Q65.A capacitor of capacitance $100 μ F$ is charged to a potential of $12 V$ and connected to a $6.4 mH$ inductor to produce oscillations. The maximum current in the circuit would be :
Physics · Alternating Current · MCQ
Q66.At what distance above and below the surface of the earth a body will have same weight. (take radius of earth as $R$ .)
Physics · Gravitation · MCQ
Q67.A galvanometer having coil resistance $10Ω$ shows a full scale deflection for a current of $3 mA$ . For it to measure a current of $8 A$ , the value of the shunt should be:
Physics · Current Electricity · MCQ
Q68.A thermodynamic system is taken from an original state $A$ to an intermediate state $B$ by a linear process as shown in the figure. It's volume is then reduced to the original value from $B$ to $C$ by an isobaric… Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q69.Two charges of $5 Q$ and $- 2 Q$ are situated at the points $(3 a, 0)$ and $(- 5 a, 0)$ respectively. The electric flux through a sphere of radius ' $4 a$ ' having center at origin is :
Physics · Electrostatics · MCQ
Q70.A biconvex lens of refractive index 1.5 has a focal length of $20 cm$ in air. Its focal length when immersed in a liquid of refractive index 1.6 will be:
Physics · Geometrical Optics · MCQ
Q71.A block of mass $100 kg$ slides over a distance of $10 m$ on a horizontal surface. If the co-efficient of friction between the surfaces is 0.4, then the work done against friction $(in J$ ) is :
Physics · Work Power and Energy · MCQ
Q72.Given below are two statements: Statement I : If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in hot water. Statement II : If a capillary tube is immersed first in…
Physics · Properties of Matter · MCQ
Q73.If the radius of curvature of the path of two particles of same mass are in the ratio $3 : 4$ , then in order to have constant centripetal force, their velocities will be in the ratio of :
Physics · Circular Motion · MCQ
Q74.Match List I with List II Choose the correct answer from the options given below: Includes table
Physics · Electromagnetic Induction · MCQ
Q75.Two vessels $A$ and $B$ are of the same size and are at same temperature. A contains $1 g$ of hydrogen and $B$ contains $1 g$ of oxygen. $P_{A}$ and $P_{B}$ are the pressures of the…
Physics · Heat and Thermodynamics · MCQ
Q76.In the given circuit, the breakdown voltage of the Zener diode is $3.0 V$ . What is the value of $I_{z}$ ? Includes diagram
Physics · Electronic Devices · MCQ
Q77.A body starts moving from rest with constant acceleration covers displacement $S_{1}$ in first $(p - 1)$ seconds and $S_{2}$ in first $p$ seconds. The displacement $S_{1} + S_{2}$ will be made in time :
Physics · Motion in A Straight Line · MCQ
Q78.The electric current through a wire varies with time as $I = I_{0} + β t$ , where $I_{0} = 20 A$ and $β = 3 A / s$ . The amount of electric charge crossed through a section of the wire in $20 s$ is :
Physics · Current Electricity · MCQ
Q79.The potential energy function (in $J$ ) of a particle in a region of space is given as $U = (2 x^{2} + 3 y^{3} + 2 z)$ . Here $x, y$ and $z$ are in meter. The magnitude of $x$ -component of force (in $N$ ) acting on the particle at point $P (1, 2, 3) m$ …
Physics · Work Power and Energy · MCQ
Q80.The explosive in a Hydrogen bomb is a mixture of $_{1} H^{2},_{1} H^{3}$ and $_{3} Li^{6}$ in some condensed form. The chain reaction is given by $_{3} Li^{6} +_{0} n^{1} \to_{2} He^{4} +_{1} H^{3}_{1} H^{2} +_{1} H^{3} \to_{2} He^{4} +_{0} n^{1}$ …
Physics · Atoms and Nuclei · MCQ
Q81.In a double slit experiment shown in figure, when light of wavelength $400 nm$ is used, dark fringe is observed at $P$ . If $D = 0.2 m$ , the minimum distance between the slits $S_{1}$ and $S_{2}$ is … Includes diagram
Physics · Wave Optics · Numerical
Q82.A cylinder is rolling down on an inclined plane of inclination $6 0^{\circ}$ . It's acceleration during rolling down will be $\frac{x}{3} m / s^{2}$ , where $x =$ (use $g = 10 m / s^{2}$ ).
Physics · Rotational Motion · Numerical
Q83.An electron is moving under the influence of the electric field of a uniformly charged infinite plane sheet $S$ having surface charge density $+ σ$ . The electron at $t = 0$ is at a distance of $1 m$ from $S$ and has a…
Physics · Electrostatics · Numerical
Q84.When a hydrogen atom going from $n = 2$ to $n = 1$ emits a photon, its recoil speed is $\frac{x}{5} m / s$ . Where $x =$ . (Use, mass of hydrogen atom $= 1.6 \times 1 0^{- 27} kg$ )
Physics · Atoms and Nuclei · Numerical
Q85.A square loop of side $10 cm$ and resistance $0.7Ω$ is placed vertically in east-west plane. A uniform magnetic field of $0.20 T$ is set up across the plane in north east direction. The magnetic field is decreased to zero…
Physics · Electromagnetic Induction · Numerical
Q86.The magnetic potential due to a magnetic dipole at a point on its axis situated at a distance of $20 cm$ from its center is $1.5 \times 1 0^{- 5} T m$ . The magnetic moment of the dipole is $A m^{2}$ …
Physics · Magnetic Properties of Matter · Numerical
Q87.A $16Ω$ wire is bend to form a square loop. A $9 V$ battery with internal resistance $1Ω$ is connected across one of its sides. If a $4 μ F$ capacitor is connected across one of its diagonals, the energy stored by…
Physics · Capacitor · Numerical
Q88.When the displacement of a simple harmonic oscillator is one third of its amplitude, the ratio of total energy to the kinetic energy is $\frac{x}{8}$ , where $x =$ .
Physics · Simple Harmonic Motion · Numerical
Q89.A ball rolls off the top of a stairway with horizontal velocity $u$ . The steps are $0.1 m$ high and $0.1 m$ wide. The minimum velocity $u$ with which that ball just hits the step 5 of the stairway will be $x ms^{- 1}$ …
Physics · Motion in A Plane · Numerical
Q90.In a test experiment on a model aeroplane in wind tunnel, the flow speeds on the upper and lower surfaces of the wings are $70 ms^{- 1}$ and $65 ms^{- 1}$ respectively. If the wing area is $2 m^{2}$ , the lift of…
Physics · Properties of Matter · Numerical