List of top Physics Questions asked in OJEE

Number of neutrons in $C^{12}$ and $ C^{14} \, are $

The temperature of a body is increased from $-73^{\circ}\,C$ to $327\,^{\circ}\,C$. Then the ratio of emissive power is

Two identical cells each of emf E and internal resistance r are connected in parallel with an external resistance R. To get maximum power developed across R, the value of R is

In a closed organ pipe, the first resonance occurs at $50\, cm$. At what length of pipe, the second resonance will occur?

Which shows radioactivity?

An object is placed at a distance of $40\, cm$ in front of a concave mirror of focal length $20\, cm$. The nature of image is

If 'muscle times speed equals power' what is the ratio of the $SI$ unit and the $CGS$ unit of muscle?