List of top Physics Questions

Which part of our eye is responsible for image formation?
A current through a conductor is 2A, when there is a potential difference of 10V between its ends. Its resistance is
\(\frac{\text{Force} \times \text{Length}}{\text{Charge}}=\)which quantity ?
A bird is flying down vertically towards the surface of water with constant speed. A fish in the water vertically below the bird sees the bird
In our eye cones identify
The current in a conductor is directly proportional to the potential difference between its ends. This is called____
Units for specific resistance
With the help of _____eye-lens changes its focal length.
The circuit given represents which of the logic operations ?
Logic gate operation
An object is placed at a certain distance on the principal axis of a concave mirror. If the image distance (v) is 30 cm and radius of curvature (R) of the mirror is 20 cm, find the object distance (u)
If magnification is equal to one, it means
If a light ray passing through centre of curvature (C) of a mirror is incident on the mirror, the reflected ray's path is
When distance between object and screen is more than 4 times the focal length, in how many positions of the convex lens, image is sharp ?
If object and image lie on the same side of a mirror, the mirror is
Focal plane of a spherical mirror is
When a set of parallel rays of light inclined at 15° to the principal axis, are incident on a convex lens, they
To find normal to a curved surface at a point, join that point and
A transistor amplifier along with a tank circuit with positive feedback will act as
In p-type semiconductors
If the mass numbers of two nuclei are in the ratio 3: 2, then the ratio of their nuclear densities is :
The ratio of the total energy E of the electron to its kinetic energy K in hydrogen atom is
1018 fissions per second is required for producing power of 300 MW in a nuclear power station. To increase the power output to 360 MW the additional number of fissions required per second is
During $ẞ^{-}$ decay of a radioactive element there is an increase in its
If the momentum of an α-particle is half that of a proton, then the ratio between the wavelengths of their de-Broglie waves is
If $θ_p$ is the polarizing angle for a glass plate of refractive index μ and critical angle $θ_c$, then