List of top Physics Questions asked in AP EAPCET

The temperature of the sink of a Carnot engine is \(250\;K\). In order to increase the efficiency of the Carnot engine from \(25\%\) to \(50\%\), the temperature of the source should be increased by

A uniform solid sphere of radius \(R\) produces a gravitational acceleration of \(a_0\) on its surface. The distance of the point from the centre of the sphere where the gravitational acceleration becomes \[ \frac{a_0}{4} \] is

In a hydraulic lift, compressed air exerts a force \(F\) on a small piston of radius \(3\;cm\). Due to this pressure, the second piston of radius \(5\;cm\) lifts a load of \(1875\;kg\). The value of \(F\) is
Take acceleration due to gravity \(g=10\;\text{m s}^{-2}\).

A metal tape is calibrated at \(25^\circ C\). On a cold day when the temperature is \(-15^\circ C\), the percentage error in the measurement of length is
Coefficient of linear expansion of metal \(=1\times10^{-5}\;^\circ C^{-1}\)

In a U-shaped tube the radius of one limb is \(2\;mm\) and that of other limb is \(4\;mm\). A liquid of surface tension \(0.03\;N m^{-1}\), density \(1500\;kg m^{-3}\) and angle of contact zero is taken in the tube. The difference in the heights of the levels of the liquid in the two limbs is
Take \(g=10\;\text{m s}^{-2}\).

A gas is expanded from an initial state to a final state along a path on a \(P\)-\(V\) diagram. The path consists of (i) an isothermal expansion of work \(50\;J\), (ii) an adiabatic expansion and (iii) an isothermal expansion of work \(20\;J\). If the internal energy of gas is changed by \(-30\;J\), then the work done by gas during adiabatic expansion is

A steady flow of a liquid of density \(\rho\) is shown in figure. At point \(1\), the area of cross-section is \(2A\) and the speed of flow of liquid is \(\sqrt{2}\;m s^{-1}\). At point \(2\), the area of cross-section is \(A\). Between the points \(1\) and \(2\), the pressure difference is \(100\;N m^{-2}\) and the height difference is \(10\;cm\). The value of \(\rho\) is
Take \(g=10\;m s^{-2}\).

A ball of mass \(300\;g\) is dropped from a height \(10\;m\) above a sandy ground. On reaching the ground, it penetrates through a distance \(1.5\;m\) in sand and finally stops. The average resistance offered by the sand to oppose the motion is
Take \(g=10\;\text{m s}^{-2}\).

Which of the following is not true about vectors \(\vec{A},\vec{B}\) and \(\vec{C}\)?

A body is executing S.H.M. At a displacement \(x\), its potential energy is \(9\;J\) and at a displacement \(y\), its potential energy is \(16\;J\). The potential energy at displacement \((x+y)\) is

Two balls \(A\) and \(B\), of masses \(M\) and \(2M\) respectively collide each other. If the ball \(A\) moves with a speed of \(150\;\text{m s}^{-1}\) and collides with ball \(B\), moving with speed \(v\) in the opposite direction. After collision if ball \(A\) comes to rest and the coefficient of restitution is \(1\), then the speed of ball \(B\) before it collides with ball \(A\) is

A solid sphere of radius \(R\) has its outer half removed, so that its radius becomes \(\left(\dfrac{R}{2}\right)\). Then its moment of inertia about the diameter is

As shown in the figure, an iron block \(A\) of volume \(0.25\;m^3\) is attached to a spring \(S\) of unstretched length \(1.0\;m\) and hanging to the ceiling of a roof. The spring gets stretched by \(0.2\;m\). This block is removed and another block \(B\) of iron of volume \(0.75\;m^3\) is now attached to the same spring and kept on a frictionless inclined plane of \(30^\circ\) inclination. The distance of the block from the top along the incline at equilibrium is

\(y=(Pt^2-Qt^3)\;m\) is the vertical displacement of a ball which is moving in vertical plane. Then the maximum height that the ball can reach is

A force \(\vec{F_1}\) of magnitude \(4\;N\) acts on an object of mass \(1\;kg\), at origin in a direction \(30^\circ\) above the positive \(x\)-axis. A second force \(\vec{F_2}\) of magnitude \(4\;N\) acts on the same object in the direction of the positive \(y\)-axis. The magnitude of the acceleration of the object is nearly

A cricket ball of mass \(50\;g\) having velocity \(50\;\text{cm s}^{-1}\) is stopped in \(0.5\;s\). The force applied to stop the ball is

Two masses \(M_1\) and \(M_2\) are arranged as shown in the figure. Let \(a\) be the magnitude of the acceleration of the mass \(M_1\). If the mass of \(M_1\) is doubled and that of \(M_2\) is halved, then the acceleration of the system is

An object moving along \(x\)-axis with a uniform acceleration has velocity \[ \vec{V}=(12\;\text{cm s}^{-1})\hat{i} \] at \(x=3\;\text{cm}\). After \(2\;\text{s}\), if it is at \(x=-5\;\text{cm}\), then its acceleration is

In SI units, \(kg\;m^2\;s^{-2}\) is equivalent to which of the following?

Consider a transistor amplifier in common emitter configuration. If the current amplification factor, collector resistance and base resistance are increased by 1%, 2% and 1% respectively, then the change in voltage gain is:

The frequency band for downlink satellite communication is in the range:

Light with an energy flux of \(20 \, W \, cm^{-2}\) falls on a non-reflecting surface at normal incidence. If the surface has an area of \(25 \, cm^2\), then the total momentum delivered for complete absorption during a 15 minute time span is:

The correct option from the following statements is:
Statement 1: Binding energy per nucleon is higher for heavy nuclei \((A > 170)\).
Statement 2: Binding energy per nucleon is lower for light nuclei \((A < 30)\).
Statement 3: Binding energy per nucleon in the range \(30 < A < 170\) is nearly constant since nuclear force is strong and short-ranged.
Statement 4: Binding energy per nucleon is higher for both light nuclei \((A < 30)\) and heavy nuclei \((A > 170)\).

The spatial component of a wave function is given by \(\psi = A[\sin(ax)\cos(bx) + \cos(ax)\sin(bx)]\). The wavelength of the wave is:

Consider a series LCR circuit connected to an AC source. The resistance, inductive reactance and capacitive reactance are \(R, X_L, X_C\) respectively. If the current in this circuit lags the source voltage then the correct option is: