List of top Physics Questions asked in AP EAPCET

The process of retrieval of information from the carrier wave

The load resistance and the base-emitter voltage of a transistor in CE configuration are 5 kΩ and 0.02 V respectively. If the collector current is 2 mA, then its voltage gain is

The laser in an audio compact disc uses light of wavelength \( 7.8 \times 10^{-2} \, \text{nm} \). What is the frequency of light emitted by the laser?

The device that can detect optical signals is

An alpha particle of energy \( K \, \text{MeV} \) is moving towards a nucleus of atomic number \( Z \). The distance of closest approach of the alpha particle to the nucleus in meters is

An ac generator converts

The nucleus having highest binding energy per nucleon is

The magnitude of the axial field due to a short bar magnet at a distance of 50 cm from its mid-point is

The threshold frequency of a photosensitive material is \( v \). When photons of frequency \( 2v \) incident on the material, photoelectrons are emitted with a maximum linear momentum \( P \). To get photoelectrons with maximum linear momentum \( 2P \), the frequency of the incident photons is

When a metal target is bombarded with high-energy electrons, the electromagnetic waves generated are

A resistor of resistance \( R \) and an inductor of inductive reactance \( R \) are connected in series to an ac source. A capacitor of capacitive reactance \( 2R \) is then connected in series with \( L \) and \( R \). The ratio of the power factors of LR and LCR circuits is

An infinite line charge produces a field of \(9 \times 10^4 \, \text{NC}^{-1}\) at a distance of 2 cm. The linear charge density is

A circular coil of 30 turns and radius 8 cm carrying a current of 6 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 30° with the normal of the coil. The magnitude of the counter torque that must be applied to prevent the coil from turning is

Two electric dipoles, each of dipole moment ‘P’, are placed at points A (\(a,0\)) and B (\(-a,0\)) as shown in the figure. The work done in rotating both the dipoles through 90° in clockwise direction is (E = Electric field)

A parallel plate capacitor having capacity \( C_0 \) is charged to \( V_0 \). With battery disconnected, if the separation between the plates is doubled, then the energy stored in it is \( E_1 \). Instead if the separation between the plates is doubled, with battery in connection, the energy stored in it is \( E_2 \). Then the value of \( \frac{E_2}{E_1} \) is

A galvanometer has a deflection of 25 divisions for a current of 0.1 A flowing through it. Then the current sensitivity of the galvanometer is

A uniform metal wire carries a current of 2 A when an ideal cell of 3.4 V is connected across it. The wire has mass \( 8.92 \times 10^{-3} \, \text{kg} \), density \( 8.92 \times 10^3 \, \text{kg/m}^3 \) and resistivity \( 1.7 \times 10^{-8} \, \Omega \text{m} \). Then the length of the wire is

Two resistances are connected in the two gaps of a meter bridge. The balancing point is obtained at 20 cm. When a resistance of \( 15 \, \Omega \) is connected in series with the smaller resistance of the two, the balancing point shifts to 40 cm. The value of smaller resistance is

In the cyclic process given in the P-V diagram, the work done is

The work done by a gas is maximum when it expands from a volume \( V_1 \) to \( V_2 \), then the expansion is

A diffraction pattern is obtained by using a beam of red light. If the red light is replaced by the blue light, then

The image formed by a convex mirror of focal length 30 cm is a quarter of the size of the object. The distance of the object from the mirror is

The relation between the pressure (P), volume (V) and average kinetic energy (E) of a gas is

Beats are produced by frequencies \( \nu_1 \) and \( \nu_2 \) (\( \nu_1>\nu_2 \)). The duration of time between two successive minima is