List of top Physics Questions

What are the gyromagnetic ratio and Bohr magneton?
The ratio of the shortest wavelength of the Balmer series to the shortest wavelength of the Paschen series is:
Sphere of color black, red, white, and yellow are heated to the same temperature. The decreasing order of cooling is:
Which elements have the same magnetic moment \( \mu \)?
What is the expression for the time period of a satellite orbiting Earth at a height \( h \) above the Earth's surface?
The coefficient of performance of a refrigerator is 5. If the temperature inside the freezer is \( -20^\circ \mathrm{C} \), what is the temperature of the surroundings to which it rejects heat?
A metallic sphere of radius \( R \) is charged to a potential \( V \). The magnitude of the electric field at a distance \( r \, (r > R) \) from the center of the sphere is:
Find the ratio of K.E. and P.E. when a particle performs SHM and is at \( \frac{1}{n} \) times its amplitude from the mean position.
A pendulum having a negatively charged metal knob is oscillating on a positively charged surface. The time of the pendulum will be:
If a copper rod carries a direct current, the magnetic field associated with the current will be?
Rate of cooling of a body is \(0.2^\circ \text{C/min}\) when excess temperature is \(20^\circ \text{C}\). The proportionality constant \( k \) is:
What is the angular frequency \( \omega \) of a simple harmonic oscillator with mass \( m \) and spring constant \( k \)?
What is the fundamental frequency of an open organ pipe with length \( L \) and speed of sound \( v \)?
Which of the following is NOT a layer of the urinary bladder?
In a series LCR circuit connected to an AC source, at resonance, the current is maximum because:
In Young's double slit experiment, if the distance between the slits is doubled while keeping the wavelength and the distance to the screen constant, the fringe spacing will:
What is the equivalent logic gate when the output of an AND gate is passed through a NOT gate?
Convert 72 degrees Celsius to Fahrenheit.
What is the oxidation state of Fe in \( \mathrm{Fe_3O_4} \)?
Find the solubility product of \( \mathrm{Ba(OH)_2} \)?
Where \( S = 1.73 \times 10^{-14} \).
The first member of the Paschen series in the hydrogen spectrum is of wavelength \( 18800 \, \text{Å} \). What is the short wavelength limit of the Paschen series?
A coil has a resistance of \( 30 \, \Omega \) and an inductive reactance of \( 20 \, \Omega \) at 50 Hz frequency. If an AC source of 200 V and 100 Hz is connected across the coil, then how much current will flow through the coil?
Which of the following is a logic gate that gives an output of 1 when the inputs are different?
What is the overtone of a vibrating string?
How do you find the amplitude of a simple harmonic oscillator?