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.
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?
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
For an ideal gas, coefficient of volume expansion is given by
The angle of projection with the horizontal in terms of maximum height attained and horizontal range is given by
The formula of capacitative reactance is
Which of the following quantity represents the dimensions of momentum?
Two converging lenses of focal length 20 cm and 40 cm are placed in contact. The effective power of the combination is
For the same resonant frequency, if \( L \) is changed from \( L \) to \( \frac{L}{3} \), then capacitance should change from \( C \) to
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
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?
Least distance of distinct vision is_____
Focal length of a lens is 25 cm. Its power is___
The alloy made of Cu, Mn, Ni 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
Conductivity =
A convex lens form image of an object at infinity. Object is at
\(4 \Omega, 8 \Omega, R\) resistors are connected in series. Resultant resistance is \(20 \Omega\). Then \(R=?\)
Focal length of plano-convex lens of refractive index n and radius of curvature R is
When how much current flows in the fuse, it melts ?
The resistance of human body varies between