List of top Physics Questions asked in AP EAPCET

What does Lenz's Law give ?

An $\alpha$-particle moves in a circular path of radius $1\, cm$ in a uniform magnetic field of $0.125\, T$. The de Broglie wavelength associated with the $\alpha$-particle is

The potential energy of a simple harmonic oscillator of mass $2\, kg$ at its mean position is $5\, J.$ If its total energy is $9\, J$ and amplitude is $1\, cm$. then its time period is

Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )

A body is projected with a speed 'u? at an angle $'\theta'$ with the horizontal. The radius of curvature of the trajectory when it makes an angle $\left(\frac{\theta}{2} \right)$ with the horizontal is (g - acceleration due to gravity)

A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is

Sand is to be piled up on a horizontal ground in the form of a regular cone of a fixed base of radius R. Coefficient of static friction between the sand layers is p. Maximum volume of the sand that can be piled up in the form of cone without slipping on the ground is

A body of mass 2 kg thrown vertically upward from the ground with a velocity of $8 \, ms^{-1}$ reaches a maximum height of 3 in. The work done by the air resistance is_______ (Acceleration due to gravity = $10 \, ms^{-2}$)

A rigid metallic sphere is spinning around its own axis in the absence of external torque. If the temperature is raised, its volume increases by $9 \%$. The change in its angular speed is

A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )

The radii of the two columns in a U - tube are r1 and r2. When a liquid of density p (angle of contact is $ 0{}^\circ $ ) is filled in it, the level difference of the liquid in the two arms is h. The surface tension of the liquid is: (g = acceleration due to gravity)

The minimum force required to move a body up an inclined plane of inclination $ 30{}^\circ $ , is found to be thrice the minimum force required to prevent it from sliding down the plane. The coefficient of friction between the body and the plane is:

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 :

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

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 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)

The focal length of a spherical mirror made of steel is $150 \,cm$. If the temperature of the mirror increases by $200\, K$, its focal length become (coefficient of linear expansion of steel $\alpha=12 \times 10^{-6 \circ} C ^{-1} .$ )

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}}) $

A solid sphere of mass $100\, kg$ and radius $10\, m$ moving in a space becomes a circular disc of radius $20\, m$ in one hour. Then the rate of change of moment of inertia in the process 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