List of top Physics Questions

A convex lens of refractive index 1.5 is kept in a liquid medium having same refractive index. What is the focal length of the lens in this medium?
Under what condition will the magnifying power of a microscope be maximum?
What is photo-cell? Write down its two applications.
What is Curie law?
What is carbon dating?
The critical angle for total internal reflection of a ray from any medium to vacuum is 30\(^{\circ}\). Then velocity of light in the medium will be
For resonance condition in any L-C-R circuit, the phase-difference between applied voltage and current is
In step-up transformer, the value of current in secondary coil compared to primary coil is
In a vertically upwards magnetic field \(\vec{B}\), a positively charged particle is projected horizontally eastwards. What will be the direction of force on the particle?
Describe the two shortcomings of Bohr model of atom.
X-rays are
The final image formed by a terrestrial telescope is
The coefficient of reflection for total internal reflection will be
A spherical mirror is immersed in water. Its focal length will
64 identical drops each of capacity 5 µF combine to form a big drop. What will be the capacity of the big drop?
If the distance between the two charges is increased, then the electrostatic potential energy of the charges
The value of electric potential at a distance r from a point charge is
The relation between the drift velocity (\(V_d\)) and applied electric field (E) of a conductor is
What is mainly measured by potentiometer?
Two resistors R and 2R are connected in series in an electric circuit. The thermal energy developed in R and 2R will be in ratio
The symbol \(\rightarrow\!\!|\) is the symbol of
Unit of amplification factor of transistor is
Which one of the following logic gates is universal logic gate?
The law, governing the force acting between two electric charges known as
Waves of UHF frequency are generally transmitted as