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Physics · 2025 · 7 Apr · Shift 1

25 questions from this JEE Main paper

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2025 · 7 Apr · Shift 1
Physics

Physics · 2025 · 7 Apr · Shift 1

25 questions from this JEE Main paper

Electrostatics2 questions Magnetic Properties of Matter1 questions Work Power and Energy1 questions Center of Mass1 questions Alternating Current2 questions Waves1 questions Magnetics2 questions Current Electricity1 questions Properties of Matter1 questions Wave Optics1 questions Motion in A Plane1 questions Atoms and Nuclei2 questions Geometrical Optics3 questions Electronic Devices1 questions Laws of Motion1 questions Heat and Thermodynamics3 questions Rotational Motion1 questions

Q51.If $ϵ_{0}$ denotes the permittivity of free space and $Φ_{E}$ is the flux of the electric field through the area bounded by the closed surface, then dimensions of $(ϵ_{0} \frac{d ϕ _{E}}{d t})$ are that of :
Physics · Electrostatics · MCQ
Q52.The percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium (magnetic susceptibility $χ_{Mg} = 1.2 \times 1 0^{- 5}$ ) is :
Physics · Magnetic Properties of Matter · MCQ
Q53.An object of mass 1000 g experiences a time dependent force $F = (2 t \hat{i} + 3 t^{2} \hat{j}) N$ . The power generated by the force at time $t$ is:
Physics · Work Power and Energy · MCQ
Q54.A rod of length 5 L is bent right angle keeping one side length as 2 L . The position of the centre of mass of the system : (Consider $L = 10 cm$ ) Includes diagram
Physics · Center of Mass · MCQ
Q55.An ac current is represented as $i = 52 + 10 cos (650 π t + \frac{π}{6}) A m p$ The r.m.s value of the current is
Physics · Alternating Current · MCQ
Q56.Two harmonic waves moving in the same direction superimpose to form a wave $x = a cos (1.5 t) cos (50.5 t)$ where t is in seconds. Find the period with which they beat. (close to nearest integer)
Physics · Waves · MCQ
Q57.A particle of charge $q$ , mass $m$ and kinetic energy $E$ enters in magnetic field perpendicular to its velocity and undergoes a circular arc of radius (r). Which of the following curves represents the variation of $r$ with $E$ ?
Physics · Magnetics · MCQ
Q58.A wire of resistance $R$ is bent into a triangular pyramid as shown in figure with each segment having same length. The resistance between points $A$ and $B$ is $R / n$ . The value of $n$ is : Includes diagram
Physics · Current Electricity · MCQ
Q59.Two wires A and B are made of same material having ratio of lengths $\frac{L _{A}}{L _{B}} = \frac{1}{3}$ and their diameters ratio $\frac{d _{A}}{d _{B}} = 2$ . If both the wires are stretched using same force, what would be the ratio of their respective…
Physics · Properties of Matter · MCQ
Q60.Two plane polarized light waves combine at a certain point whose electric field components are $E_{1} = E_{0} Sin ω t E_{2} = E_{0} Sin (ω t + \frac{π}{3})$ …
Physics · Wave Optics · MCQ
Q61.Uniform magnetic fields of different strengths $(B_{1}$ and $B_{2})$ , both normal to the plane of the paper exist as shown in the figure. A charged particle of mass $m$ and charge $q$ , at the interface at an instant,… Includes diagram
Physics · Magnetics · MCQ
Q62.Two projectiles are fired from ground with same initial speeds from same point at angles $(4 5^{\circ} + α)$ and $(4 5^{\circ} - α)$ with horizontal direction. The ratio of their times of flights is
Physics · Motion in A Plane · MCQ
Q63.In a hydrogen like ion, the energy difference between the $2^{nd}$ excitation energy state and ground is 108.8 eV . The atomic number of the ion is:
Physics · Atoms and Nuclei · MCQ
Q64.Two thin convex lenses of focal lengths 30 cm and 10 cm are placed coaxially, 10 cm apart. The power of this combination is:
Physics · Geometrical Optics · MCQ
Q65.Two charges $q_{1}$ and $q_{2}$ are separated by a distance of 30 cm . A third charge $q_{3}$ initially at ' C ' as shown in the figure, is moved along the circular path of radius 40 cm from C to D . If the difference in potential energy due to… Includes diagram
Physics · Electrostatics · MCQ
Q66.A lens having refractive index 1.6 has focal length of 12 cm , when it is in air. Find the focal length of the lens when it is placed in water. (Take refractive index of water as 1.28)
Physics · Geometrical Optics · MCQ
Q67.For a hydrogen atom, the ratio of the largest wavelength of Lyman series to that of the Balmer series is
Physics · Atoms and Nuclei · MCQ
Q68.In the following circuit, the reading of the ammeter will be $($ Take Zener breakdown voltage $= 4 V)$ Includes diagram
Physics · Electronic Devices · MCQ
Q69.A cubic block of mass $m$ is sliding down on an inclined plane at $6 0^{\circ}$ with an acceleration of $\frac{g}{2}$ , the value of coefficient of kinetic friction is
Physics · Laws of Motion · MCQ
Q70.Match the List I with List II Choose the correct answer from the options given below: Includes table
Physics · Heat and Thermodynamics · MCQ
Q71.A wire of length 10 cm and diameter 0.5 mm is used in a bulb. The temperature of the wire is $172 7^{\circ} C$ and power radiated by the wire is 94.2 W . Its emissivity is $\frac{x}{8}$ where $x =$ . (Given $σ = 6.0 \times 1 0^{- 8} W m^{- 2} K^{- 4}, π = 3.14$ …
Physics · Heat and Thermodynamics · Numerical
Q72. $\frac{x}{15} I$ and C are disc, solid sphere and spherical shell respectively with same radii and masses. These masses are placed as shown in figure. The moment of inertia of the given system about PQ axis is $\frac{x}{15} I$ … Includes diagram
Physics · Rotational Motion · Numerical
Q73.For ac circuit shown in figure, $R = 100 k Ω$ and $C = 100 pF$ and the phase difference between $V_{in}$ and $(V_{B} - V_{A})$ is $9 0^{\circ}$ … Includes diagram
Physics · Alternating Current · Numerical
Q74.A container contains a liquid with refractive index of 1.2 up to a height of 60 cm and another liquid having refractive index 1.6 is added to height H above first liquid. If viewed from above, the apparent shift in the position of bottom…
Physics · Geometrical Optics · Numerical
Q75.An ideal gas has undergone through the cyclic process as shown in the figure. Work done by the gas in the entire cycle is $\times 1 0^{- 1} J$ . (Take $π = 3.14$ ) Includes diagram
Physics · Heat and Thermodynamics · Numerical