List of top Physics Questions asked in SRMJEEE

The depletion region width of a p-n junction is \( 4 \times 10^{-6} \, \text{m} \) and the potential barrier is \( 0.8 \, \text{V} \). The electric field intensity in the depletion region is:

An object of height \( 4 \, \text{cm} \) is placed \( 15 \, \text{cm} \) in front of a convex lens of focal length \( 10 \, \text{cm} \). The height of the image formed is:

Monochromatic light of frequency \( 8 \times 10^{14} \, \text{Hz} \) is incident on a metal surface whose threshold frequency is \( 5 \times 10^{14} \, \text{Hz} \). The stopping potential is approximately:
(Given \( h = 6.6 \times 10^{-34} \, \text{J s} \), \( e = 1.6 \times 10^{-19} \, \text{C} \))

A planet has mass \( 81 M_E \) and radius \( 9 R_E \), where \( M_E \) and \( R_E \) are the mass and radius of Earth respectively. The escape velocity from the planet is:

An AC source of frequency \( 50 \, \text{Hz} \) is connected to a pure capacitor. The phase difference between voltage and current is:

Which one is the correct expression of electric potential on the axial point of a dipole whose dipole moment is р and length is 2l, at a distance of r?

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 V_A and VV_B 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 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