List of top Physics Questions

Find the logic gate, when both the inputs are high the output is low and vice-versa.
What is the minimum band-gap of the LED diode?
Work done in moving a charge of 25 C is 50 J. Calculate the potential difference between two points.
Two particles of masses \( m_1 = m \), \( m_2 = 2m \) and charges \( q_1 = q \), \( q_2 = 2q \) entered into uniform magnetic field. Find \( \frac{F_1}{F_2} \) (force ratio).
The correct arrangement in increasing order of wavelength of X-rays, UV rays, and microwaves is
The velocity of the proton is one-fourth the velocity of the electron. What is the ratio of the de-Broglie wavelength of an electron to that of a proton?
For an ideal gas, coefficient of volume expansion is given by
Two converging lenses of focal length 20 cm and 40 cm are placed in contact. The effective power of the combination is
The angle of projection with the horizontal in terms of maximum height attained and horizontal range is given by
The displacement \( x \) of a particle varies with time \( t \), \( x = ae^{-pt} + be^{qt} \), where \( a, b, p, q \) are positive constants. The velocity of the particle will
The formula of capacitative reactance is
Which of the following quantity represents the dimensions of momentum?
For the same resonant frequency, if \( L \) is changed from \( L \) to \( \frac{L}{3} \), then capacitance should change from \( C \) to
In an adiabatic process with the ratio of two specific heat, \( \gamma = \frac{3}{2} \), pressure is increased by \( \frac{2}{3} \% \), then decrease in the volume will be
Insulators can be charged by which of the following process?
The alloy made of Cu, Mn, Ni is
A convex lens form image of an object at infinity. Object is at
Focal length of plano-convex lens of refractive index n and radius of curvature R is
Focal length of a lens is 25 cm. Its power is___
Formula used when a light ray enters a medium of refractive index n2 from a medium of refractive index n1 at curved surface with radius of curvature R is
Least distance of distinct vision is_____
Conductivity =
\(4 \Omega, 8 \Omega, R\) resistors are connected in series. Resultant resistance is \(20 \Omega\). Then \(R=?\)
When how much current flows in the fuse, it melts ?
The resistance of human body varies between