List of top Physics Questions asked in AP EAPCET

A source of sound moves towards a stationary observer with speed \( 10 \text{ m/s} \). Speed of sound = \( 340 \text{ m/s} \). If original frequency is \( 340 \text{ Hz} \), apparent frequency is:

A wave is represented by \( y = 0.1 \sin(200t - 10x) \). Find wave velocity.

A particle executes SHM with amplitude \( 0.1 \text{ m} \) and angular frequency \( 10 \text{ rad/s} \). Maximum acceleration is:

Two SHMs are given by: \[ x_1 = A \sin \omega t, \] \[ x_2 = A \cos \omega t. \] Phase difference is:

A particle in SHM has amplitude \( 2 \text{ m} \) and total energy \( 8 \text{ J} \). Its potential energy at displacement \( 1 \text{ m} \) is:

A mass of \( 1 \text{ kg} \) is attached to a spring of force constant \( 100 \text{ N/m} \). Time period is:

A mass of 1 kg is attached to a spring of force constant 100 N/m. Time period is:

A gas at pressure \( P \), volume \( V \), and temperature \( T \). If pressure is doubled and temperature is halved, the new volume is:

If average kinetic energy per molecule is \( 3 \times 10^{-21} \) J, pressure of gas depends on:

If pressure of a gas is doubled at constant temperature, mean free path becomes:

The RMS velocity of a gas at temperature \( T \) is \( v \). If temperature becomes \( 4T \), new RMS velocity is:

For a gas, \( C_p - C_v = R \). If \( C_v = 2R \), then \( C_p \) is:

A Carnot engine operates between 600 K and 300 K. Efficiency is:

A gas expands from volume 2 m\(^3\) to 6 m\(^3\) at constant pressure 100 Pa. Work done is:

A gas absorbs 500 J heat and does 200 J work. Change in internal energy is:

A body cools from 80°C to 60°C in 5 minutes. Surrounding temperature is 20°C. Time to cool from 60°C to 40°C is:

Heat flows through a rod of length 1 m and area 1 m$^2$. Temperature difference = 10 K. If thermal conductivity = 5 W/mK, heat flow per second is:

Heat required to raise temperature of 2 kg substance by 5°C is 1000 J. Specific heat is:

A rod of length 1 m expands by 1 mm when temperature increases by 100°C. Coefficient of linear expansion is:

A 100 g metal at 80°C is placed in 100 g water at 20°C. Final temperature is 40°C. Find specific heat of metal.

A liquid flows with velocity $2$ m/s through a pipe of diameter $0.01$ m. Density = $1000$ kg/m$^3$, viscosity = $0.5$ kg/m$\cdot$s. Reynolds number is:

A soap bubble of radius $1$ cm has surface tension $0.03$ N/m. Excess pressure inside is:

A pipe has cross-sectional areas $4$ cm$^2$ and $1$ cm$^2$. If velocity in the wider section is $2$ m/s, velocity in the narrower section is:

Water flows in a horizontal pipe. At a point where speed is $2$ m/s, pressure is $2000$ Pa. At another point, speed becomes $4$ m/s. Find pressure at second point. (Density $= 1000$ kg/m$^3$)

A wire extends by $1$ mm under $100$ N. Extension under $300$ N is: