List of top Physics Questions asked in AP EAPCET

A light from Paschen series of hydrogen atom is able to eject photoelectrons from a metal. Then the work function of the metal is
The average number of photons emitted per second by a laser of power \(6.6 \times 10^{-3}\) W producing a light of wavelength 600 nm is (Planck’s constant, \(h = 6.6 \times 10^{-34}\) J·s)
The average number of photons emitted per second by a laser of power \(6.6 \times 10^{-3}\) W producing a light of wavelength 600 nm is (Planck’s constant, \(h = 6.6 \times 10^{-34}\) J·s)
The average number of photons emitted per second by a laser of power \(6.6 \times 10^{-3}\) W producing a light of wavelength 600 nm is (Planck’s constant, \(h = 6.6 \times 10^{-34}\) J·s)
A solenoid has the length 1 m and the area of cross section \(0.02\ \text{m}^2\). If no. of turns in the solenoid is 5000 then the self inductance of the solenoid is
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
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 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 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
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:
A block of mass \(5\,\text{kg}\) starts up a \(45^\circ\) incline with an initial kinetic energy of \(100\,\text{J}\). The coefficient of friction is \(0.5\). The distance it travels before coming to rest is:
A lift raises 50 passengers of average weight \(600\,\text{N}\) each to a height of \(100\,\text{m}\) in time \(T\). If average power used is \(15\,\text{kW}\), then the value of \(T\) is: