List of top Physics Questions asked in AP EAPCET

A concave mirror forms an image at twice the focal length from the mirror. What is the nature and size of the image compared to the object?
Two capacitors of capacitances \( 4 \, \mu\text{F} \) and \( 6 \, \mu\text{F} \) are connected in series across a potential difference of \( 300 \, \text{V} \). What is the potential difference across the \( 4 \, \mu\text{F} \) capacitor?
If the ratio of the maximum and minimum amplitudes of an amplitude modulated wave is 7:3, then the modulation index is
A 10 $\mu$C charge is placed at the vertex A of an equilateral triangle ABC of side 2 m. The work done in taking another charge $(3 + \sqrt{3})$ $\mu$C from the mid point of BC to the mid point of the side AC is:
The de Broglie wavelength associated with an electron accelerated through a potential difference of \( \frac{200}{3} \ \text{V} \) is nearly
If a particle is moving along a circle of radius \( r \) with constant speed \( v \), then the magnitude of the change in velocity when the particle moves from \( P \) to \( Q \), where \( PQ \) makes an angle \( \theta \) at the center of the circle is:
If the amplitude of electric field vector and frequency of an electromagnetic wave travelling along $z$-direction in vacuum are 180 N C$^{-1}$ and 60 GHz respectively, then the equation of the magnitude of the electric field of the plane electromagnetic wave is
If a ball projected vertically upwards with certain initial velocity from the ground crosses a point at a height of 25 m twice in a time interval of 4 s, then the initial velocity of the ball is
(Acceleration due to gravity $= 10~\text{m/s}^2$)
To get an output value $ 1 $ from the given circuit, the input values of $ A $, $ B $, and $ C $ are:
output value 1 from the given circuit,
A vector perpendicular to the vector $\left(4\hat{i} - 3\hat{j}\right)$ is
As shown in the figure, if the values of the electric potential at three points A, B and C in a uniform electric field (\( \vec{E} \)) are \(V_A\), \(V_B\), and \(V_C\) respectively, then
electric potential at three points A, B and C
A coil of inductive reactance $\frac{1}{\sqrt{3}} \Omega$ and a resistance 1 $\Omega$ are connected in series to a 200 V, 50 Hz ac source. The time lag between voltage and current is
The speed of a stationary wave represented by the equation $y = 0.75 \sin\left(\dfrac{7\pi}{4}x\right)\cos(350\pi t)$ is
The work done to increase the volume of 2 moles of an ideal gas from \( V \) to \( 2V \) at a constant temperature \( T \) is \( W \). The work to be done to increase the volume of 2 moles of the same gas from \( 2V \) to \( 4V \) at the same constant temperature \( T \) is:
The efficiency of a Carnot's heat engine is \( \frac{1}{3} \). If the temperature of the source is decreased by \(50^\circ \text{C}\) and the temperature of the sink is increased by \(25^\circ \text{C}\), the efficiency of the engine becomes \( \frac{3}{16} \). The initial temperature of the sink is
If 2 moles of an ideal monoatomic gas at a temperature of 27 °C is mixed with 4 moles of another ideal monoatomic gas at a temperature of 327 °C, then the temperature of the mixture of the two gases is
If the far point of a short sighted person is 400 cm, then the power of the lens required to enable him to see very distant objects clearly is
To increase the RMS speed of gas molecules by 25%, the percentage increase in absolute temperature of the gas is to be

The ratio of the currents i$_1$, i$_2$ and i$_3$ in the circuit is:

A balloon with mass 'm' is descending vertically with an acceleration 'a' (where a \(<\) g). The mass to be removed from the balloon, so that it starts moving vertically up with an acceleration 'a' is
If current of 80 A is passing through a straight conductor of length 10 m, then the total momentum of electrons in the conductor is (mass of electron \( = 9.1 \times 10^{-31} \) kg and charge of electron \( = 1.6 \times 10^{-19} \) C)
When both the source of sound and observer approach each other with a speed equal to 10% of the speed of sound, then the percentage change in frequency heard by the observer is nearly
The magnitudes of two vectors \(\vec{A}\) and \(\vec{B}\) are \(A\) and \(B\) respectively, the magnitude of their resultant vector \(\vec{R}\) is \(R\). If \(\theta\) is the angle between the vectors \(\vec{A}\) and \(\vec{B}\), the angle made by the vector \(\vec{R}\) with the vector \(\vec{A}\) is \(\alpha\), then
A mercury drop of radius \( 1 \) cm is divided into \( 10^6 \) droplets of equal size. If the surface tension of mercury is \( 35 \times 10^{-3} \) N/m, then the change in surface energy in the process is:
The temperature of water of mass 100 g is raised from 24°C to 90°C by adding steam to it. The mass of the steam added is (Latent heat of steam = 540 cal/g and specific heat capacity of water = 1 cal/g°C)