List of top Physics Questions asked in AP EAPCET

A bulb of power 660 W radiates uniformly in all directions. The pressure exerted by the radiation on the surface at a distance of 5 m is
The equation that represents magnetic field of a plane electromagnetic wave which is propagating along x-direction with wavelength 10 mm and maximum electric field 60 V m$^{-1}$ in y-direction is (c – speed of light)
A 100 \(\mu F\) capacitor is connected to a 100 V, 50 Hz AC supply. The rms value of the current is
A long solenoid having 100 turns per cm carries a current of \(\frac{4}{\pi}\) A. At the centre of it is placed a coil of 200 turns of cross sectional area 25 cm\(^2\) having its axis parallel to the field produced by the solenoid. When the direction of the current in the solenoid is reversed within 0.04 s, the induced emf in the coil is
A particle of charge \(1.0 \times 10^{-16}\) C moves through a uniform magnetic field \(\vec{B} = B_0 (\hat{i} + 4\hat{j})\) T. The particle velocity at some instant is \(\vec{V} = (2\hat{i} + 4\hat{j})\) m/s and the magnetic force acting on it is \(3 \times 10^{-16}\) N. The magnitude of \(B_0\) is
A short bar magnet produces a magnetic field of \(6.4 \times 10^{-5}\) T at a distance of 20 cm from the center of the magnet on the normal bisector of the magnet. The magnetic field produced by this magnet at a distance of 40 cm on the axis is
A beam of light is incident from air on the surface of a liquid. The angle of incidence is $\theta$ and the angle of refraction is $\alpha$. If the critical angle for liquid when surrounded by air is $\theta_{c}$ then $\sin\theta_{c}$ is
Three charges +5q, Q and -2q are kept along a straight line in the same order such that, +5q and -2q charges are at a distance of \(\frac{2r}{3}\) and \(\frac{r}{3}\) from the charge Q respectively. If the net force on the charge -2q is zero, then Q is
A capacitor has capacitance \(C_0\) when there is no dielectric between its plates. Two slabs of dielectric constant \(K_1\), \(K_2\) respectively with area equal to area of plates but thickness half of the distance between the plates are placed in between the plates. Then the new capacitance is
In a parallel plate capacitor, if \(10^{12}\) electrons pass from one plate to another, a potential difference of 10 V is developed across the plates. The capacitance of the capacitor is
In Young's double slit experiment, light of wavelength 480 nm is incident on two slits separated by a distance of \(4 \times 10^{-7}\) m. If a thin plate of thickness \(1.4 \times 10^{-6}\) m and refractive index \(\frac{13}{7}\) is placed between one of the slits and screen, the phase difference introduced at the position of central maxima is
The current \(i\) in the circuit given below is
current i in the circuit given below is
Two wires A and B of same material having length \(L_A, L_B\) and radii \(R_A, R_B\) and drift velocity \(V_A, V_B\) respectively carries same current. If \(L_A = L_B\) and \(R_A = 2 R_B\) then the value of \(\frac{V_A}{V_B}\) is
The coefficient of volume expansion of a material is \(5 \times 10^{-4}\ ^\circ \text{C}^{-1}\). The fractional change in its density for a \(40^\circ\text{C}\) rise in temperature is nearly
A gaseous mixture consists of 4 g of oxygen and 4 g of helium. The ratio \( \frac{C_p}{C_v} \) of the mixture is
One mole of an ideal monatomic gas undergoes the process A $\rightarrow$ B $\rightarrow$ C $\rightarrow$ D $\rightarrow$ A as shown in the graph. The work done during the process is
an ideal monatomic gas undergoes the process A → B → C → D →A
The movable cylindrical pistons \( P_1 \) and \( P_2 \) of a hydraulic lift are of radii 2 m and \( R \) respectively. A body of mass 32 kg on piston \( P_2 \) is supported by a body of mass 2 kg placed on piston \( P_1 \). The value of \( R \) is
The volume of a gas at 30 °C temperature and 760 mm of Hg pressure is 100 cc. Then its volume at the same temperature and 400 mm of Hg is
A large tank open to the atmosphere at the top and filled with water develops a small hole in the side at a point 20 m below the water level. If the rate of flow of water from the hole is \(3 \times 10^{-3}\,\text{m}^3/\text{min}\), then the area of the hole is: (Take \( g = 10\,\text{m/s}^2 \))
Two wires made of the same material are clamped at one end and pulled by the same force at the other end. The length and radius of the first wire are three times those of the second. If the increase in the length of the first wire is \(x\), then the increase in the length of the second wire is:
Two trains A and B are moving towards each other with speeds 72 kmh$^{-1}$ and 36 kmh$^{-1}$ respectively. The train-A whistles at 640 Hz frequency. Before the trains meet, frequency of sound heard by a passenger in Train-B is (Speed of sound in air = 340 ms$^{-1}$)
A wheel is rotating with angular speed \( \omega \). Another identical wheel with moment of inertia three times the first is initially at rest. It is suddenly coupled to the first. What fraction of the original kinetic energy is lost?
If the earth were to suddenly shrink to \( \dfrac{1}{64} \) of its present volume, keeping mass constant, then what would be the new duration of the day?
There is a planet which is 8 times massive and 27 times denser than the earth. If \( g' \) and \( g \) are the accelerations due to gravity on the surfaces of the planet and the earth respectively, then
The position of a \(3\,\text{kg}\) mass moving along the \(x\)-axis is given by \(x = 0.3 \cos (\omega t)\,\text{m}\). If \(K(t)\) denotes the kinetic energy at time \(t\), then the value of \( \dfrac{K\left( \dfrac{\pi}{60} \right)}{K\left( \dfrac{\pi}{30} \right)} \) is: