List of top Physics Questions asked in AP EAPCET

In a potentiometer experiment, when two cells of emfs \( E_1 \) and \( E_2 \) (\( E_2>E_1 \)) are connected in series, the balancing length is 160 cm. If one of the cells is reversed, the balancing length decreases by 75%. If \( E_1 = 1.2 \, V \), then \( E_2 \) is
The magnetic field at a distance of 10 cm from a long straight thin wire carrying a current of 4 A is
A velocity selector is to be constructed to select ions with a velocity of 6 km/s. If the electric field used is 400 V/m, then the magnetic field to be used is
A closely wound solenoid of 1200 turns and area of cross-section 5 cm\(^2\) carries a current. If the magnetic moment of the solenoid is 1.2 J T\(^{-1}\), then the current through the solenoid is
Three point charges shown in the figure lie along a straight line. The energy required to exchange the position of central charge with one of the negative charges is
Three point charges shown in the figure lie along a straight line.
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
If a refrigerator of coefficient of performance (COP) 5 has a freezer at a temperature of -13 °C, then the room temperature is
From the figure shown for a thermodynamic system, match the curves with their respective thermodynamic processes (P - Pressure and V - Volume)
thermodynamic system,
Curve | Process I | a) Adiabatic
II | b) Isobaric
III | c) Isochoric
IV | d) Isothermal
The force between two point charges kept with a separation of 9 cm in air is 98 N. If a dielectric slab of constant 4, thickness 6 cm and another dielectric slab of constant 9, thickness 3 cm are introduced between the two charges, then the new force becomes
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
Two sound waves of wavelengths 99 cm and 100 cm produce 10 beats in a time of \( t \) seconds. If the speed of sound in air is 330 m/s, then the value of \( t \) in seconds is
The angular frequency of a block of mass 0.1 kg oscillating with the help of a spring of force constant 2.5 N m\(^{-1}\) is:
If water flows with a velocity of 20 cm/s in a pipe of radius 2 cm, then the flow is (The coefficient of viscosity of water is \(10^{-3} \, \mathrm{kg\,m^{-1}s^{-1}}\) and density of water is \(10^{3} \, \mathrm{kg\,m^{-3}}\))
An electric kettle takes 4 A current at 220 V. If the entire electric energy is converted into heat energy, then the time (in minutes) taken to increase the temperature of 1 kg of water from 34 °C to 100 °C is
According to Zeroth Law of Thermodynamics, the physical quantity which is same for two bodies in thermal equilibrium is
As shown in the figure, a light uniform rod PQ of length 150 cm is suspended from the ceiling horizontally using two metal wires A and B tied to the ends of the rod. The ratios of the radii and the Young’s modulus of the materials of the two wires A and B are respectively 2 : 3 and 3 : 2. The position at which a weight should be suspended from the rod such that the elongations of the two wires become equal is
light uniform rod PQ of length 150 cm is suspended
An infinite number of objects each 1 kg mass are placed on the x-axis at \(\pm 1 \, \text{m}, \pm 2 \, \text{m}, \pm 4 \, \text{m}, \pm 8 \, \text{m} ...\). The magnitude of the resultant gravitational potential (in SI units) at \( x = 0 \) is: (G = Universal gravitational constant)
If the displacement \( y \) (in cm) of a particle executing simple harmonic motion is given by the equation: \[ y = 5 \sin(3 \pi t) + 5 \sqrt{3} \cos(3 \pi t) \] then the amplitude of the particle is:
If a wheel starting from rest is rotating with an angular acceleration of $\pi$ rad s$^{-2}$, then the number of rotations made by the wheel in the 6th second is
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The linear momentum of a body of mass 8 kg is 24 kg m s$^{-1}$. If a constant force of 24 N acts on the body in the direction of the motion for a time of 3 s, then the increase in the kinetic energy of the body is
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A person holds a ball of mass 0.25 kg in his hand and throws it, so that it leaves his hand with a speed of 12 m s$^{-1}$. In the process, if his hand moved through a distance of 0.9 m, then the net force acted on the ball is
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As shown in the figure, a force $F$ is applied on a block of mass $\frac{\sqrt{3}}{2}$ kg placed on a rough horizontal surface. The maximum value of $F$ for the block not to move is (coefficient of static friction between the block and the surface is $\frac{1}{2\sqrt{3}}$ and acceleration due to gravity = 10 m s$^{-2}$)
a force F is applied on a block of mass
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The power required for an engine to maintain a constant speed of 50 m s$^{-1}$ for a train of mass 3 $\times$ 10$^5$ kg on rough rails is (the coefficient of kinetic friction between the rails and wheels of the train is 0.05 and acceleration due to gravity = 10 m s$^{-2}$)
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If the radius of gyration of a thin circular ring about an axis passing through its centre and perpendicular to its plane is $10\sqrt{2}$ cm, then its radius about its diameter is
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If bullets are fired in all possible directions from same point with equal velocity of 10 m s$^{-1}$ and an angle of projection 45$^\circ$, then the area covered by the bullets on the ground nearby (acceleration due to gravity 10 m s$^{-2}$) is
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