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Content Curator | Updated On - Jun 6, 2026

JEE Main 2026 April 4 Shift 1 Physics Question Paper with Solution PDF is available here for download. NTA conducted JEE Main April 4 Shift 1 from 9 AM to 12 PM in CBT Mode.

The JEE Main 2026 Physics Question Paper includes 25 questions. The question paper is divided into 2 sections – Section A and Section B. As per the JEE Main marking Scheme, candidates are awarded +4 marks for every correct answer, and -1 mark is deducted for every wrong answer.

JEE Main 2026 April 4 Shift 1 Physics Question Paper with Solution Pdf

JEE Main 2026 April 4 Shift 1 Physics Question Paper Download PDF Check Solutions
JEE Main 2026 April 4 Shift 1 Question Paper with solution

Question 1:

In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm. If the circular scale has 100 divisions, the least count of screw gauge is __________ mm.

  • (A) \(1 \times 10^{-2}\)
  • (B) \(1 \times 10^{-3}\)
  • (C) \(5 \times 10^{-2}\)
  • (D) \(5 \times 10^{-3}\)

Question 2:

The increase in the pressure required to decrease the volume (\(\Delta V\)) of water is \(6.3 \times 10^7 N/m^2\). The percentage decrease in the volume is __________. (Bulk modulus of water \( = 2.1 \times 10^9 N/m^2\).)

  • (A) 2 %
  • (B) 3 %
  • (C) 6 %
  • (D) 4 %

Question 3:

The time taken by a block of mass \(m\) to slide down from the highest point to the lowest point on a rough inclined plane is 50 % more compared to the time taken by the same block on identical inclined smooth plane. Both inclined planes are at \(45^\circ\) with the horizontal. The coefficient of kinetic friction between the rough inclined surface and block is __________.

  • (A) 3/4
  • (B) 2/3
  • (C) 5/9
  • (D) 4/9

Question 4:

Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass number 10. If the binding energy per nucleon for the mass numbers 3, 4 and 10 are 5.6 MeV, 7.4 MeV and 6.1 MeV, respectively, then in the process, \(\Delta Mc^2 = \_\_\_\_\_\_\_\_\_ MeV\).

  • (A) 6.9
  • (B) 7.9
  • (C) 2.2
  • (D) 4.3

Question 5:

A solid sphere of mass \(M\) and radius \(R\) is divided into two unequal parts. The smaller part having mass \(M/8\) is converted into a sphere of radius \(r\) and the larger part is converted into a circular disc of thickness \(t\) and radius \(2R\). If \(I_1\) is moment of inertia of a sphere having radius \(r\) about an axis through its centre and \(I_2\) is the moment of inertia of a disc about its diameter, the ratio of their moment of inertia \(I_2/I_1 = \_\_\_\_\_\_\_\_\_\).

  • (A) 35
  • (B) 70
  • (C) 140
  • (D) 210

Question 6:

The two projectiles are projected with the same initial velocities at the \(15^\circ\) and \(30^\circ\) with respect to the horizontal. The ratio of their ranges is \(1:x\). The value of \(x\) is

  • (A) \(\sqrt{2}\)
  • (B) \(\sqrt{3}\)
  • (C) \(2\sqrt{3}\)
  • (D) \(\frac{1}{\sqrt{2}}\)

Question 7:

The graph shows variation of stopping potential \(V_0\) with the frequency \(\nu\) of the incident radiation for three photosensitive metals \(X_1, X_2\) and \(X_3\). Which metal will give out electrons with greater kinetic energy, for the same wavelength of incident radiation?

  • (A) \(X_1\)
  • (B) \(X_2\)
  • (C) \(X_3\)
  • (D) All the metals will give out photo electrons with same kinetic energies.

Question 8:

A slit of width \(a\) is illuminated by light of wavelength \(\lambda\). The linear separation between \(1^{st}\) and \(3^{rd}\) minima in the diffraction pattern produced on a screen placed at a distance \(D\) from the slit system is __________.

  • (A) \(\frac{D\lambda}{a}\)
  • (B) \(1.5 \frac{D\lambda}{a}\)
  • (C) \(2 \frac{D\lambda}{a}\)
  • (D) \(3 \frac{D\lambda}{a}\)

Question 9:

A string A of length 0.314 m and Young's modulus \(2 \times 10^{10} N/m^2\) is connected to another string B of length and Young's modulus both twice of those of A. This series combination of strings is then suspended from a rigid support and its free end is fixed to a load of mass 0.8 kg. The net change in length of the combination is __________ mm.
(radius of both the strings is 0.2 mm and acceleration due to gravity \(= 10 m/s^2\))
(Mass of both strings is to be neglected as compared to the mass of load)

  • (A) 3
  • (B) 2
  • (C) 1.9
  • (D) 1

Question 10:

One gas of \(n_1\) mole of molecules at temperature \(T_1\), volume \(V_1\), and pressure \(P_1\), and another gas of \(n_2\) mole of molecules at temperature \(T_2\), volume \(V_2\), and pressure \(P_2\), are mixed resulting in pressure \(P\) and volume \(V\) of the mixture. The temperature of the mixture is __________.

  • (A) \((T_1 + T_2)/2\)
  • (B) \(T_1 T_2 PV/(T_2 P_1 V_1 + T_1 P_2 V_2)\)
  • (C) \((T_2 P_1 V_1 + T_1 P_2 V_2)/(T_1 T_2 PV)\)
  • (D) \(|T_1 - T_2|/2\)

Question 11:

An ideal gas undergoes a process maintaining relation between pressure (\(P\)) and volume (\(V\)) as \(P = P_0 \left[ 1 + \left(\frac{V_0}{V}\right)^2 \right]^{-1}\), where \(P_0\) and \(V_0\) are constants. If two samples \(A\) and \(B\) (two moles each) with initial volumes \(V_0\) and \(3V_0\) respectively undergo above mentioned process and attain same pressure, then the difference at the temperatures of these samples, \(T_B - T_A\) is __________.

  • (A) \(\frac{9P_0 V_0}{8R}\)
  • (B) \(\frac{11P_0 V_0}{10R}\)
  • (C) \(\frac{7P_0 V_0}{6R}\)
  • (D) \(\frac{13P_0 V_0}{11R}\)

Question 12:

A voltmeter with internal resistance of \(x \, \Omega\) can be used to measure upto \(20 V\). In order to increase its measuring range to \(30 V\), the required modification is

  • (A) connect resistor of \(\frac{x}{2} \, \Omega\), in series with voltmeter.
  • (B) connect resistor of \(\frac{x}{2} \, \Omega\), in parallel to voltmeter.
  • (C) connect a resistor of \(x \, \Omega\) in series with voltmeter.
  • (D) connect resistor of \(2x \, \Omega\) in parallel to voltmeter.

Question 13:

Two 4 bits binary numbers, \(A = 1101\) and \(B = 1010\) are given in the inputs of a logic circuit shown in figure below. The output (\(Y\)) will be:

  • (A) \(Y = 1101\)
  • (B) \(Y = 0010\)
  • (C) \(Y = 0111\)
  • (D) \(Y = 1000\)

Question 14:

A rod of length 10 cm lies along the principle axis of a concave mirror of focal length 10 cm as shown in figure. The length of the image is __________ cm.

  • (A) 2.5
  • (B) 5
  • (C) 7.5
  • (D) 7

Question 15:

A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed \(v\). If \(x\) is the separation between the plates at any instant, then the time rate of change of electrostatic energy of the capacitor is proportional to \(x^\alpha\), where \(\alpha\) is __________.

  • (A) -2
  • (B) 1
  • (C) -1
  • (D) 2

Question 16:

An insulated wire is wound so that it forms a flat coil with \(N = 200\) turns. The radius of the innermost turn is \(r_1 = 3 cm\), and of the outermost turn \(r_2 = 6 cm\). If \(20 mA\) current flows in it then the magnetic moment will be \(\alpha \times 10^{-2} A.m^2\). The value of \(\alpha\) is __________.

  • (A) 4.4
  • (B) 2.64
  • (C) 3.25
  • (D) 1.2

Question 17:

Consider a circuit consisting of a capacitor \((20\,\mu F)\), resistor \((100\,\Omega)\) and two identical diodes as shown in the figure. The resistance of each diode under forward biasing condition is \(10\,\Omega\). The time constant of the circuit is \(\alpha \times 10^{-3}\,s\). The value of \(\alpha\) is ________.

  • (A) 2.2
  • (B) 2.0
  • (C) 2.1
  • (D) 2.4

Question 18:

The voltage and the current between \(A\) and \(B\) points shown in the circuit are ________

  • (A) 24 V, 12 A
  • (B) 24 V, 4 A
  • (C) 18 V, 12 A
  • (D) 27 V, 4 A

Question 19:

A telescope with objective diameter \(R\) is used to observe a distant star emitting light of wavelength \(500 nm\), at a resolution of \(5 \times 10^{-7} radian\). The value of \(R\) is __________ cm.

  • (A) 61
  • (B) 122
  • (C) 244
  • (D) 305

Question 20:

An unpolarized light is incident on the plane interface of air-dielectric medium shown in figure. If the incident angle is equal to Brewster angle, identify the expression representing reflected wave.

  • (A) \((E_x \hat{i} + E_y \hat{j}) \sin(kx - kz - \omega t)\)
  • (B) \((E_x \hat{i} + E_z \hat{k}) \sin(kx + ky - \omega t)\)
  • (C) \((E_x \hat{j} + E_y \hat{k}) \sin(ky + kz - \omega t)\)
  • (D) \((E_x \hat{i} + E_y \hat{j} + E_z \hat{k}) \sin(kx + ky - kz - \omega t)\)

Question 21:

A 1 kg block subjected to two simultaneous forces \((2\hat{i} + 3\hat{j} + 4\hat{k}) N\) and \((3\hat{i} - \hat{j} - 2\hat{k}) N\) is moved a distance of 25 m along \((3\hat{i} - 4\hat{j})\) direction. The work done in this process is __________ J.


Question 22:

The surface tension of a soap solution is \(3.5 \times 10^{-2} N/m\). The work required to increase the radius of a soap bubble from 1 cm to 2 cm is \(\alpha \times 10^{-6} J\). The value of \(\alpha\) is __________. (\(\pi = 22/7\))


Question 23:

The velocity of a particle executing simple harmonic motion along x-axis is described as \(v^2 = 50 - x^2\), where \(x\) represents displacement. If the time period of motion is \(\frac{x}{7} s\), the value of \(x\) is __________.


Question 24:

A body of mass 2 kg begins to move under the influence of time dependent force \(\vec{F} = (2t\hat{i} + 6t^2\hat{j}) N\), where \(\hat{i}\) and \(\hat{j}\) are unit vectors along x and y-axis respectively. The power produced by the force at \(t = 2 s\) is __________ W.


Question 25:

An inductor of \(10\,mH\), capacitor of \(0.1\,\muF\), and a resistor of \(100\,\Omega\) are connected in series across an A.C. power supply of \(220\,V,\,70\,Hz\). The power factor of the given circuit is \(0.5\). The difference between the inductive reactance and capacitive reactance is \(\sqrt{3}\,a\,\Omega\). The value of \(a\) is ________.

JEE Main 2026 Physics | April Session | Important Topics

*The article might have information for the previous academic years, please refer the official website of the exam.

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