List of top Physics Questions

When a spring is stretched by x amount, the potential energy stored in it is E. When the spring is stretched by another x amount, the potential energy stored in the spring becomes E'. Then \(\frac{E'}{E}\) is,
The intensity of gravitational field of earth is maximum at the _______
A point source of light is used in a photoelectric effect. If the source is removed farther from the emitting metal, the stopping potential
The horizontal component of the earth’s magnetic field can be represented as
Three wires of equal lengths are bent in the form of loops. One of the loops is a circle, another is a semi-circle and the third one is a square. They are placed in a uniform magnetic field and the same electric current is passed through them. Which of the following loop configuration will experience greater torque?
Three capacitances 3\(\mu\)F, 9\(\mu\)F, and 18\(\mu\)F are connected once in series and then in parallel. The ratio of equivalent Cs/Cр will be:
The number of protons or atomic number is reduced to 2 by which form of radioactive decay?
Why is the Wheatstone bridge better than the other methods of measuring resistances?
In general, as the temperature increases, the electron work function of metal would
If VA and VVB are the potentials of the two points A and B, what will be the correct relation between the electric field and the potential difference between the points? The distance between the points is d.
the potential difference between the points
The current which is assumed to be flowing in a circuit from positive terminal to negative, is called
The height of a geostationary satellite is _________
For spherical mirror the relationship between radius of curvature R and focal length is
A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
Which among the following statements is true about Hugen’s principle
Which of the following phenomenon is not explained by Huygen’s wave theory?
After gamma decay
The threshold wavelength for photoelectric effect from a copper surface with work functions 4.5 eV is
A series a,c circuit consists of an inductor and a capacitor. The inductance and capacitance are respectively 1 henry and 25 Fμ. If the current is maximum in the circuit then the angular frequently will be
The current of 2A passing through a coil of 100 turns gives rise to a magnetic flux of 5 x 10-5 Wb/turn, the magnetic energy associated with the coil is _________ J
During collision, which of the following statement is wrong?
Dimensional formula for angular momentum is
The de Broglie wavelength of an electron that has been accelerate through a potential difference of 100 V
Constantan wire is used for making standard resistance, because it has

Electron belongs to the family of