List of top Physics Questions asked in AP EAMCET

An elevator can carry a maximum load of 2000 kg (elevator + passengers) and is moving up with a constant speed of 9 km/h. If the frictional force opposing the motion is \( 5 \times 10^3 \) N, the minimum power delivered by the motor to the elevator is (acceleration due to gravity = 10 ms\(^2\))
A body is projected horizontally from the top of a tall tower. At a time of 3.5 s from the projection, the horizontal and vertical displacements of the body are equal. The velocity of projection of the body is (acceleration due to gravity = 10 ms\(^2\))

A lens with refractive index \( \frac{3}{2} \) has a power of +5 diopters in air. If it is completely immersed in water, its power is (in diopters).
The refractive index of water is \( \frac{4}{3} \) 
 

Two light sources of intensities \( I \) and \( 9I \) produce interference fringes on a screen. The phase difference between the beams is \( \frac{\pi}{2} \) at point A and at point B on the screen. The difference between resultant intensities at point A and B is
A rectangular coil of size 15 cm \( \times \) 20 cm is placed in XY plane in a region of uniform electric field \( 3 \times 10^3 \, {KVm}^{-1} \). Then the electric flux through the coil is:
In the hydrogen spectrum, the difference in frequencies of first and second Lyman lines is equal to the frequency of the second Balmer line. This corresponds to:
A coil of two turns is made of a wire length L and another coil of four turns is made from same length L. When the same current is flowing in two coils, then the ratio of magnetic inductions at their centres is:

The Wheatstone bridge is balanced when \(R_3 = 144 \, \Omega\). If \(R_2\) and \(R_1\) are interchanged, the bridge balances for \(R_3 = 169 \, \Omega\). The value of \(R_4\) is: 


 

Four identical cells, each with internal resistance 1 \(\Omega\) and emf 10 V are connected in series to a resistance R and they are connected in parallel and then to an external resistance R in series. For what value of R the current in series and in parallel combination is the same?

A wire of 60 cm length and mass 10 g is suspended by a pair of flexible leads in a magnetic field of 0.60 T as shown in the figure. The magnitude of the current required to remove the tension in the supporting leads is: 

Electric field intensity and electric potential at a point due to a point charge are 600 V/m and -3600 V respectively. The distance of the point from the charge and the magnitude of the charge are:
In a hydroelectric power station, the water is flowing at \(2 \, {ms}^{-1}\) in the river which is \(100 \, {m}\) wide and \(5 \, {m}\) deep. The maximum power output from the river is:

In the given figure of logic gates, if the inputs are \( A = 1 \) and \( B = 0 \) then the values of \( y_1, y_2, \) and \( y_3 \) respectively are: 


 

The vertical extension in a light spring by a weight of 1 kg suspended from the lower end is 9.8 cm. The time period of oscillation of the spring is:

In the given LCR series circuit the quality factor is


 

If the work done \(W\), length \(L\) and time \(T\) are considered as the fundamental quantities, the dimensional formula for mass is:
A block of mass \(m\) is placed in equilibrium on a moving horizontal plank. The maximum horizontal acceleration of the plank for \(\mu = 0.2\) is (Acceleration due to gravity = \(10 \, {ms}^{-2}\)).

A body of mass \(2 \, {kg}\) is placed on a smooth horizontal surface. Two forces \(F_1 = 20 \, {N}\) and \(F_2 = 10\sqrt{3} \, {N}\) are acting on the body in the directions making angles of \(30^\circ\) and \(60^\circ\) to the surface. The reaction of the surface on the body is: 


 

A running man has half the kinetic energy of a boy of half his mass. The man speeds up by \(1 \, {m/s}^{-1}\) to have the same kinetic energy as the boy. The initial speed of the man is:
Three point masses \(m_1, m_2, m_3\) are located at the vertices of an equilateral triangle of side 'a'. The moment of inertia of the system about an axis along the altitude of the triangle passing through \(m_1\) is:
When a tension of \(F_1\) is applied on a metal wire its length is \(L_1\), if the tension is \(F_2\), length becomes \(L_2\). Then the original length of the wire is:
A parallel plate capacitor has two square plates of side 5 cm separated by 15 mm. A Pyrex glass slab of dielectric constant \(K = 4.5\) and thickness 10 mm is placed between the plates. The capacitance of the capacitor is:
Two vibrating strings of same length, same cross-sectional area and stretched to same tension are made of material with densities \(\rho\) and \(2\rho\). Each string is fixed at both ends. If \(V_1\) and \(V_2\) are speeds of transverse waves in the strings with densities \(\rho\) and \(2\rho\) respectively, then \(\frac{V_1}{V_2}\) is:
If a ray of light takes \(t_1\) and \(t_2\) times in two media of absolute refractive indices \(\mu_1\) and \(\mu_2\) respectively to travel same distance, then the relation between the times and refractive indices is:
Heat is supplied at constant pressure to a diatomic gas. The part of this heat that was utilized to increase its internal energy is: