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Physics · 2024 · 31 Jan · Shift 1

30 questions from this JEE Main paper

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2024 · 31 Jan · Shift 1
Physics

Physics · 2024 · 31 Jan · Shift 1

30 questions from this JEE Main paper

Gravitation1 questions Electrostatics1 questions Heat and Thermodynamics2 questions Laws of Motion1 questions Motion in A Straight Line1 questions Center of Mass3 questions Magnetics2 questions Dual Nature of Radiation1 questions Geometrical Optics1 questions Waves1 questions Atoms and Nuclei2 questions Electromagnetic Induction2 questions Circular Motion1 questions Current Electricity2 questions Units and Measurements2 questions Properties of Matter2 questions Electromagnetic Waves1 questions Electronic Devices1 questions Capacitor1 questions Simple Harmonic Motion1 questions Wave Optics1 questions

Q61.Four identical particles of mass $m$ are kept at the four corners of a square. If the gravitational force exerted on one of the masses by the other masses is $(\frac{2 2 + 1}{32}) \frac{Gm ^{2}}{L ^{2}}$ , the length of…
Physics · Gravitation · MCQ
Q62.Two charges $q$ and $3 q$ are separated by a distance ' $r$ ' in air. At a distance $x$ from charge $q$ , the resultant electric field is zero. The value of $x$ is :
Physics · Electrostatics · MCQ
Q63.The given figure represents two isobaric processes for the same mass of an ideal gas, then Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q64.In the given arrangement of a doubly inclined plane two blocks of masses $M$ and $m$ are placed. The blocks are connected by a light string passing over an ideal pulley as shown. The coefficient of friction between the surface of the plane… Includes diagram
Physics · Laws of Motion · MCQ
Q65.The relation between time ' $t$ ' and distance ' $x$ ' is $t = α x^{2} + β x$ , where $α$ and $β$ are constants. The relation between acceleration $(a)$ and velocity $(v)$ is :
Physics · Motion in A Straight Line · MCQ
Q66.An artillery piece of mass $M_{1}$ fires a shell of mass $M_{2}$ horizontally. Instantaneously after the firing, the ratio of kinetic energy of the artillery and that of the shell is:
Physics · Center of Mass · MCQ
Q67.The parameter that remains the same for molecules of all gases at a given temperature is :
Physics · Heat and Thermodynamics · MCQ
Q68.A rigid wire consists of a semicircular portion of radius $R$ and two straight sections. The wire is partially immerged in a perpendicular magnetic field $B = B_{0} \hat{k}$ as shown in figure. The magnetic force on the wire if it has a… Includes diagram
Physics · Magnetics · MCQ
Q69.When a metal surface is illuminated by light of wavelength $λ$ , the stopping potential is $3 λ$ . When the same surface is illuminated by light of wavelength $3 λ$ , stopping potential is $2 V$ . The threshold…
Physics · Dual Nature of Radiation · MCQ
Q70.The refractive index of a prism with apex angle $A$ is $cot A /2$ . The angle of minimum deviation is :
Physics · Geometrical Optics · MCQ
Q71.The fundamental frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. If length of the open pipe is $60 cm$ , the length of the closed pipe will be:
Physics · Waves · MCQ
Q72.If the wavelength of the first member of Lyman series of hydrogen is $λ$ . The wavelength of the second member will be
Physics · Atoms and Nuclei · MCQ
Q73.A coil is places perpendicular to a magnetic field of $3000 T$ . When the field is changed to $2 s$ in $22 V$ , an induced emf of $0.02 m$ is produced in the coil. If the diameter of the coil is $0.02 m$ …
Physics · Electromagnetic Induction · MCQ
Q74.A coin is placed on a disc. The coefficient of friction between the coin and the disc is $μ$ . If the distance of the coin from the center of the disc is $r$ , the maximum angular velocity which can be given to the disc, so that the coin…
Physics · Circular Motion · MCQ
Q75.Two conductors have the same resistances at $0^{\circ} C$ but their temperature coefficients of resistance are $α_{1}$ and $α_{2}$ . The respective temperature coefficients for their series and parallel combinations are :
Physics · Current Electricity · MCQ
Q76.If the percentage errors in measuring the length and the diameter of a wire are $0.1%$ each. The percentage error in measuring its resistance will be:
Physics · Units and Measurements · MCQ
Q77.A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the velocity time graph for the transit of the ball?
Physics · Properties of Matter · MCQ
Q78.A force is represented by $F = a x^{2} + b t^{\frac{1}{2}}$ where $x =$ distance and $t =$ time. The dimensions of $b^{2} / a$ are:
Physics · Units and Measurements · MCQ
Q79.In a plane EM wave, the electric field oscillates sinusoidally at a frequency of $5 \times 1 0^{10} Hz$ and an amplitude of $50 Vm^{- 1}$ . The total average energy density of the electromagnetic field of the wave is :…
Physics · Electromagnetic Waves · MCQ
Q80.Identify the logic operation performed by the given circuit. Includes diagram
Physics · Electronic Devices · MCQ
Q81.A solid circular disc of mass $0.4 m / s$ rolls along a horizontal floor so that its center of mass has a speed of $0.4 m / s$ . The absolute value of work done on the disc to stop it is J.
Physics · Center of Mass · Numerical
Q82.An electron moves through a uniform magnetic field $B = B_{0} \hat{i} + 2 B_{0} \hat{j} T$ . At a particular instant of time, the velocity of electron is $u = 3 \hat{i} + 5 \hat{j} m / s$ . If the magnetic force acting…
Physics · Magnetics · Numerical
Q83.A parallel plate capacitor with plate separation $2 mm$ is charged up by a battery. It is found that on introducing a dielectric sheet of thickness $2 mm$ , while keeping the battery connections intact, the capacitor…
Physics · Capacitor · Numerical
Q84.The depth below the surface of sea to which a rubber ball be taken so as to decrease its volume by $0.02%$ is $m$ . (Take density of sea water $= 1 0^{3} kgm^{- 3}$ , Bulk modulus of rubber $= 9 \times 1 0^{8} Nm^{- 2}$ …
Physics · Properties of Matter · Numerical
Q85.A body starts falling freely from height $H$ hits an inclined plane in its path at height $h$ . As a result of this perfectly elastic impact, the direction of the velocity of the body becomes horizontal. The value of $\frac{H}{h}$ for which…
Physics · Center of Mass · Numerical
Q86.A particle performs simple harmonic motion with amplitude $A$ . Its speed is increased to three times at an instant when its displacement is $\frac{2 A}{3}$ . The new amplitude of motion is $\frac{n A}{3}$ . The value of $n$ is …
Physics · Simple Harmonic Motion · Numerical
Q87.The mass defect in a particular reaction is $n \times 1 0^{7} kWh$ . The amount of energy liberated is $n \times 1 0^{7} kWh$ , where $n =$ . (speed of light $= 3 \times 1 0^{8} m / s)$
Physics · Atoms and Nuclei · Numerical
Q88.A small square loop of wire of side $l$ is placed inside a large square loop of wire of side $L (L = l^{2})$ . The loops are coplanar and their centers coincide. The value of the mutual inductance of the system is $x \times 1 0^{- 7} H$ …
Physics · Electromagnetic Induction · Numerical
Q89.Equivalent resistance of the following network is $Ω$ . Includes diagram
Physics · Current Electricity · Numerical
Q90.Two waves of intensity ratio $1 : 9$ cross each other at a point. The resultant intensities at that point, when (a) Waves are incoherent is $I_{1}$ (b) Waves are coherent is $I_{2}$ and differ in phase by $6 0^{\circ}$ . If $\frac{I _{1}}{I _{2}} = \frac{10}{x}$ …
Physics · Wave Optics · Numerical