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JEE Main
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Physics
List of top Physics Questions on Miscellaneous asked in JEE Main
In the context of the photoelectric effect, what is the threshold frequency \( f_0 \) for a metal if the work function is \( \phi = 2 \, \text{eV} \)?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A force \( \mathbf{F} = 2\hat{i} + 3\hat{j} + 5\hat{k} \) acts on a particle moving in the direction of \( \mathbf{r} = 2\hat{i} + 3\hat{j} + \beta \hat{k} \). Find the value of \( \beta \) when the work done is zero.
JEE Main - 2025
JEE Main
Physics
Miscellaneous
Electric flux \( \varphi \) is related with linear charge density \( \lambda \) and surface charge density \( \sigma \) as \( \varphi = \alpha \lambda + \beta \sigma \). Where \( \alpha \) and \( \beta \) are of appropriate dimension. The dimension of \( \frac{\beta}{\alpha} \) is:
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A mass of 100 g is projected with an initial velocity of 12 m/s at an angle of 60° with the horizontal. Find the difference between the kinetic energy at the point of projection and the kinetic energy at the highest point.
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In a resistive circuit, the power dissipated by a resistor \( R \) when a current \( I \) flows through it is given by \( P = I^2 R \). What happens to the power when the current is doubled?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A metal has a work function \( \phi \). When light of wavelength \( \lambda \) is incident on it, the kinetic energy of the ejected electrons is 2 eV. Find the new kinetic energy of the ejected electrons when light of wavelength \( \lambda/2 \) is used.
JEE Main - 2025
JEE Main
Physics
Miscellaneous
Two parallel wires carry currents of 5 A and 4 A in opposite directions. The wires are separated by a distance of 4 cm. Find the net magnetic field at a point midway between the two wires.
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A block of mass \( m \) is moving with velocity \( v \) on a smooth horizontal surface. If a constant force \( F \) is applied to the block, what is the work done by this force after 5 seconds?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
What is the time period of a simple pendulum of length \( L \) and acceleration due to gravity \( g \)?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In a sound wave, the displacement of the air particles follows the equation \( y = A \cos(kx - \omega t) \). What is the wave velocity?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
What is the time period of a simple pendulum of length \( L \) and acceleration due to gravity \( g \)?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In a resistive circuit, the power dissipated by a resistor \( R \) when a current \( I \) flows through it is given by \( P = I^2 R \). What happens to the power when the current is doubled?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In a sound wave, the displacement of the air particles follows the equation \( y = A \cos(kx - \omega t) \). What is the wave velocity?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In a resistive circuit, the power dissipated by a resistor \( R \) when a current \( I \) flows through it is given by \( P = I^2 R \). What happens to the power when the current is doubled?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A block of mass \( m \) is moving with velocity \( v \) on a smooth horizontal surface. If a constant force \( F \) is applied to the block, what is the work done by this force after 5 seconds?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In the context of the photoelectric effect, what is the threshold frequency \( f_0 \) for a metal if the work function is \( \phi = 2 \, \text{eV} \)?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
If the acceleration due to gravity on the surface of Earth is \( g \), then the acceleration due to gravity on a planet whose diameter is \( \frac{1}{3} \) of that of Earth and same mass as that of Earth is \( g' = ng \), where \( n \) is
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A solid sphere rolls without slipping on a horizontal plane. What is the ratio of translational kinetic energy to the rotational kinetic energy of the sphere?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
A solid sphere and hollow sphere roll down purely equal distances on the same inclined plane (starting from rest) in time \( t_1 \) and \( t_2 \). Then
JEE Main - 2025
JEE Main
Physics
Miscellaneous
The temperature in a city is measured to be 30°C. What is the corresponding temperature in Fahrenheit?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
In Young's Double Slit Experiment, monochromatic light of wavelength \( \lambda \) is used. The slits are separated by a distance \( d \), and the screen is placed at a distance \( D \) from the slits. If the fringe width is observed to be \( \beta \), and the distance between the slits and the screen is doubled, what will be the new fringe width?
JEE Main - 2025
JEE Main
Physics
Miscellaneous
Find the wavelength in (nm) of incident radiation where the work function is 4.12 eV and the stopping potential is 4V. Given that \( h \nu = 1242 \, \text{eV} \cdot \text{nm} \).
JEE Main - 2025
JEE Main
Physics
Miscellaneous
Two charges +7 mC and -4 mC at coordinates (-7, 0, 0) and (7, 0, 0), respectively, find the electrostatic potential energy.
\[ \epsilon_0 = 8.85 \times 10^{-12} \, \text{C}^2 \, \text{N}^{-1} \, \text{m}^{-2}. \]
JEE Main - 2025
JEE Main
Physics
Miscellaneous
The value of \( E_0 \) is 9.3 V/m and \( c \) is \( 3 \times 10^8 \, \text{m/s} \). Find the value of \( B_0 \).
JEE Main - 2025
JEE Main
Physics
Miscellaneous
Find the charge on the capacitor in the steady state.
\vspace{1cm} \includegraphics[width=0.7\textwidth]{a.png}
JEE Main - 2025
JEE Main
Physics
Miscellaneous
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