List of top Questions asked in COMEDK UGET- 2022

A point object is placed on the optic axis of a convex lens of focal length \( f \) at a distance of \( 2f \) to the left of it. The diameter of the lens is \( d \). An eye is placed at a distance of \( 3f \) to the right of the lens and a distance \( h \) below the optic axis. The maximum value of \( h \) to see the image is
For a CE transistor amplifier, the audio signal voltage across the collector resistance of \( 4 \, \text{k}\Omega \) is 5V. If the current amplification factor of the transistor is 100 and the base resistance is \( 2 \, \text{k}\Omega \), then the input signal voltage is
If the Earth were to spin faster, acceleration due to gravity at the poles
During the phenomenon of resonance, the amplitude of oscillation becomes large. The variation of g with angular velocity \( \omega \) is given by \[ g' = g - R\omega^2 \] If Earth were to spin faster, that is, angular velocity increases, then except at poles, the weight of bodies will decrease at all places.
If a heat engine is filled at temperature \( 27^\circ C \) and heat of 100 kcal is taken from the source at temperature \( 677^\circ C \), work done (in J) is