List of top Physics Questions asked in AP EAPCET

A vector $ Q\to $ which has a magnitude of 8 is added to the vector $ P\to $ , which lies along the X-axis. The resultant of these two vectors is a third vector $ R\to $ , which lies along the Y-axis and has a magnitude twice that of $ P\to $ .The magnitude of $ P\to $ is :
In a potentiometer experiment, a cell of emf 1.5 V gives a balance point at 75 cm. If the cell is replaced by another cell and the balance point is at 60 cm, the emf of the second cell is:
If the earth shrinks such that its density becomes 8 times to the present value, then the new duration of the day in hours will be
A Carnot engine operates between \( 500 \, \text{K} \) and \( 300 \, \text{K} \). If it absorbs \( 1000 \, \text{J} \) of heat from the source, the amount of work done by the engine is:

Two charges \( +5 \, \mu\text{C} \) and \( +5 \, \mu\text{C} \) are placed 1 m apart. What is the electric potential at the midpoint between them? (Take \(k = 9 \times 10^9 \, \text{N.m}^2/\text{C}^2\)).

A convex lens has a focal length of 20 cm. If an object is placed 30 cm from the lens, what is the image distance?
A particle is projected with a velocity of 20 m/s at an angle of 30° to the horizontal. What is the maximum height reached? (Take \( g = 10 \, \text{m/s}^2 \)).
A force of 20 N is applied to push a 4 kg block on a frictionless surface. What is the acceleration of the block?
A current of 3 A flows through a wire of resistance 4 $\Omega$. What is the power dissipated in the wire?
A body is thrown vertically upward with a velocity of 20 m/s. What is the maximum height reached by the body? (Take $ g = 10 \, \text{m/s}^2 $)
A solid sphere of mass \( M \) and radius \( R \) is rolling without slipping with speed \( v \). Its total kinetic energy is:
A pipe closed at one end and open at the other resonates at a fundamental frequency of 340 Hz. If the speed of sound in air is 340 m/s, the length of the pipe is:
A charged particle of mass \( m \) and charge \( q \) moves with a velocity \( \vec{v} \) perpendicular to a magnetic field \( \vec{B} \). The radius of the circular path it follows is:
A body of mass 2 kg is moving with a velocity of 10 m/s. What is its kinetic energy?

Two charges \( +4 \, \mu\text{C} \) and \( -4 \, \mu\text{C} \) are placed 2 m apart. What is the magnitude of the electric force between them? (Take \(k = 9 \times 10^9 \, \text{N.m}^2/\text{C}^2\).

The acceleration due to gravity at a height h above the earths surface is $ 9m{{s}^{-2}}. $ If $ g=10\text{ }m{{s}^{-2}} $ on the earths surface, its value at a point at an equal distance h below the surface of the earth is
A block of mass m is connected to one end of a spring of spring constant k. The other end of the spring is fixed to a rigid support. Tile mass is released slowly so that the total energy of the system is then constituted by only the potential energy, then d is the maximum extension of the spring. Instead, if the mass is released suddenly from the same initial position, the maximum extension of the spring now is (g = acceleration due to gravity)
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A): The velocity of a projectile at a point on its trajectory is equal to the slope at that point.
Reason (R): The velocity vector at a point is always along the tangent to the trajectory at that point.
In the light of the above statements, choose the correct answer from the options given below
A body is projected vertically upwards with a velocity u. It crosses a point in its journey at a height h twice, just after 1 and 7 s. The value of $ \mu $ is ms-1 is: $ (g=10{{m}^{-2}}) $
Three masses $m,\, 2\, m$ and $3\, m$ are arranged in two triangular configurations as shown in figure $1$ and figure $2$ . Work done by an external agent in changing, the configuration from figure $1$ to figure $2$ is
A man moves 20 m North, then 10 m East and then 10 $ \sqrt{2} $ m South-West, his displacement is
A body of mass m strikes another body at rest of mass $ \frac{m}{9} $ . Assuming the impact to be inelastic the fraction of the initial kinetic energy transformed into heat during the contact is
A sphere of mass m moving with constant velocity hits another stationary sphere of the same mass. If e is the coefficient of restitution, aid the ratio of velocities of the two spheres after die collision will be
Water rises to a height of 10 cm in a capillary tube and mercury falls to a depth of 3.5 cm in the same capillary tube. If the density of mercury is 13.6 g/cc and its angle of contact is $ 135{}^\circ $ and density of water is 1 g/cc and its angle of contact is $ 0{}^\circ $ , then the ratio of surface tensions of the two liquids is: $ \left( \text{cos }135{}^\circ =0.7 \right) $
Two bodies of masses $m_1$ and $m_2$ initially at rest at infinite distance apart move towards each other under gravitational force of attraction. Their relative velocity of approach when they are separated by a distance $r$ is (G = Universal gravitational constant)