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:

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

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:

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 \( h = 6.6 \times 10^{-34} \, \text{J s} \), \( e = 1.6 \times 10^{-19} \, \text{C} \))