Physics Previous Year Questions 2024 (2024–2024)

240 Physics previous-year questions spanning 2024–2024.

Physics 2024 · Mechanical Properties of Solids

With rise in temperature, the Young's modulus of elasticity:

Physics 2024 · Semiconductor Electronics

In the given circuit if the power rating of Zener diode is $10\mathrm{~mW}$, the value of series resistance $R_s$ to regulate the input unregulated supply is: {{IMG1}}

Physics 2024 · Current Electricity

The reading in the ideal voltmeter (V) shown in the given circuit diagram is: {{IMG1}}

Physics 2024 · Moving Charges and Magnetism

A galvanometer has a resistance of $50\mathrm{~\Omega}$ and it allows maximum current of $5\mathrm{~mA}$. It can be converted into voltmeter to measure upto $100\mathrm{~V}$ by connecting in series a resistor of resistance:

Physics 2024 · Work, Energy and Power

A simple pendulum of length $1\mathrm{~m}$ has a wooden bob of mass $1\mathrm{~kg}$. It is struck by a bullet of mass $10^{-2}\mathrm{~kg}$ moving with a speed of $2 \times 10^2\mathrm{~ms}^{-1}$. The bullet gets embedded into the bob. The height to which the bob rises before swinging back is (use $g = 10\mathrm{~m/s}^2$):

Physics 2024 · Laws of Motion

Consider a block and trolley system as shown in figure. If the coefficient of kinetic friction between the trolley and the surface is 0.04, the acceleration of the system in $\mathrm{ms}^{-2}$ is (Consider that the string is massless and unstretchable and the pulley is also massless and frictionless): {{IMG1}}

Physics 2024 · Moving Charges and Magnetism

A regular polygon of 6 sides is formed by bending a wire of length $4pi$ meter. If an electric current of $4pisqrt{3}\mathrm{~A}$ is flowing through the sides of the polygon, the magnetic field at the centre of the polygon would be $x \times 10^{-7}\mathrm{~T}$. The value of $x$ is:

Physics 2024 · Electromagnetic Induction

A rectangular loop of sides $12\mathrm{~cm}$ and $5\mathrm{~cm}$, with its sides parallel to the x-axis and y-axis respectively moves with a velocity of $5\mathrm{~cm/s}$ in the positive x-axis direction, in a space containing a variable magnetic field in the positive z-direction. The field has a gradient of $10^{-3}\mathrm{~T/cm}$ along the negative x-direction and it is decreasing with time at the rate of $10^{-3}\mathrm{~T/s}$. If the resistance of the loop is $6\mathrm{~m\Omega}$, the power dissipated by the loop as heat is $x \times 10^{-9}\mathrm{~W}$. The value of $x$ is:

Physics 2024 · Ray Optics and Optical Instruments

The distance between object and its 3 times magnified virtual image as produced by a convex lens is $20\mathrm{~cm}$. The focal length of the lens used is _______ $\mathrm{cm}$.

Physics 2024 · Electrostatics

Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle $\theta$ with each other. When suspended in water the angle remains the same. If density of the material of the sphere is $1.5\mathrm{~g/cc}$, the dielectric constant of water will be (Take density of water $= 1\mathrm{~g/cc}$):

Physics 2024 · System of Particles and Rotational Motion

The identical spheres each of mass 2M are placed at the corners of a right angled triangle with mutually perpendicular sides equal to $4\mathrm{~m}$ each. Taking point of intersection of these two sides as origin, the magnitude of position vector of the centre of mass of the system is $\frac{4\sqrt{2}}{x}$, where the value of $x$ is ______.

Physics 2024 · Gravitation

If $R$ is the radius of the earth and the acceleration due to gravity on the surface of earth is $g = \pi^2 \mathrm{~m/s^2}$, then the length of the second's pendulum at a height $h = 2R$ from the surface of earth will be:

Physics 2024 · Electrostatic Potential and Capacitance

Two identical capacitors have same capacitance $C$. One of them is charged to the potential $V$ and other to the potential $2V$. The negative ends of both are connected together. When the positive ends are also joined together, the decrease in energy of the combined system is:

Physics 2024 · Kinetic Theory of Gases

Two moles a monoatomic gas is mixed with six moles of a diatomic gas. The molar specific heat of the mixture at constant volume is:

Physics 2024 · Laws of Motion

A ball of mass $0.5\mathrm{~kg}$ is attached to a string of length $50\mathrm{~cm}$. The ball is rotated on a horizontal circular path about its vertical axis. The maximum tension that the string can bear is $400\mathrm{~N}$. The maximum possible value of angular velocity of the ball in $\mathrm{rad/s}$ is:

Physics 2024 · Electromagnetic Waves

A parallel plate capacitor has a capacitance $C = 200\mathrm{~pF}$. It is connected to $230\mathrm{~V}$ ac supply with an angular frequency $300\mathrm{~rad/s}$. The rms value of conduction current in the circuit and displacement current in the capacitor respectively are:

Physics 2024 · Thermodynamics

The pressure and volume of an ideal gas are related as $PV^{3/2} = K$ (Constant). The work done when the gas is taken from state A ($P_1, V_1, T_1$) to state B ($P_2, V_2, T_2$) is:

Physics 2024 · Dual Nature of Radiation and Matter

The de Broglie wavelengths of a proton and an $\alpha$ particle are $\lambda$ and $2\lambda$ respectively. The ratio of the velocities of proton and $\alpha$ particle will be:

Physics 2024 · Units and Measurements

10 divisions on the main scale of a Vernier calliper coincide with 11 divisions on the Vernier scale. If each division on the main scale is of 5 units, the least count of the instrument is:

Physics 2024 · Alternating Current

In a series LCR circuit, the capacitance is changed from $C$ to $4C$. To keep the resonance frequency unchanged, the new inductance should be:
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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