List of top Physics Questions asked in TS EAMCET

The pressure inside a mercury drop of diameter 2 mm is (Surface tension of mercury $= 0.5 Nm^{-1}$ and atmospheric pressure $= 10^5$ Pa)
Petrol (density $= 750 \, kg m^{-3}$) and diesel (density $= 850 \, kg m^{-3}$) enter into two identical venturimeters each with a velocity $10 ms^{-1}$ as shown in the figure. If $\Delta h_1$ is the difference in heights of petrol in the two vertical tubes of venturimeter A and if $\Delta h_2$ is the difference in heights of diesel in the two vertical tubes of the venturimeter B, then $\Delta h_1 : \Delta h_2 =$
A metal beam of length 1 m, breadth 2.5 cm and thickness 5 mm supported at its ends is loaded at its center by a weight of 25 N. The metal beam sags at the middle by an amount of (Young's modulus of the metal $= 2\times10^{11} Nm^{-2}$)
A solid sphere of mass M and radius R is placed inside a spherical shell of mass M and radius 4R such that their surfaces touch each other. The gravitational force due to the spherical shell and solid sphere on a body of unit mass placed at the centre of the spherical shell is (G = Universal gravitational constant)
The time period of a particle executing simple harmonic motion is $2\pi$ second. If the maximum acceleration of the particle is $10 ms^{-2}$, then the maximum velocity of the particle is
A solid sphere of mass 2 kg and radius 50 cm is rotating about its diameter with an angular speed of $50 rad s^{-1}$. The angular momentum of the sphere is
Six particles each of mass 100 g are placed at the six vertices of a regular hexagon of side $10\sqrt{3}$ m. The moment of inertia of the system of particles about an axis passing through any two diagonally opposite vertices of the hexagon is
A body is allowed to fall freely under gravity from a height of 15 m from the ground. At a point in its path, if the kinetic energy of the body is 200% more than its potential energy, then the velocity of the body at that point is (Acceleration due to gravity = 10 $ms^{-2}$)
A body of mass 0.2 kg is falling freely from a height of 180 m from the ground. The ratio of the works done by the gravitational force in the first two seconds and in the next two seconds of motion of the body is
A body of mass 3 kg is kept on a rough horizontal surface. A horizontal force of 20 N acting on the body produces an acceleration of $4 ms^{-2}$ in the body. To double the acceleration of the body, the horizontal force applied is to be increased by
Two vectors are given by $\vec{A} = \hat{i} - 2\hat{j} + 3\hat{k}$ and $\vec{B} = 2\hat{i} - 4\hat{j} + 3\hat{k}$. The unit vector along $\vec{A} + \vec{B}$ is
A body X is allowed to fall freely from a height of 125 m from the ground and another body Y is thrown at the same instant vertically upwards with a velocity of $50 ms^{-1}$ from the ground. The relative velocity of the body Y with respect to the body X when they cross each other is
A physical quantity is represented by $P = X^aY^bZ^c$. If the errors in the measurements of the physical quantities X, Y and Z are respectively a%, b% and c%, then the percentage error in the determination of quantity P is
The ratio of the relative strengths of weak nuclear force and gravitational force is
The height of a television transmitting antenna is 70 m. If the receiving antenna is at the ground level, then the service area covered by the transmitting antenna is nearly (Radius of the earth = 6400 km)
Five logic gates are connected as shown in the figure. If the inputs are A=C=1 and B=D=0, then the values of y1 and y2 respectively are
A Zener diode of breakdown voltage 6 V is connected as shown in the circuit. The power dissipated in the Zener diode is
In a nuclear fusion reaction, if the mass defect is 0.25%, then the energy released in the fusion of 400 $\mu$g mass of a substance is
If the mean life of a radioactive sample is 10 minutes, then the time (in minutes) taken for the activity of the radioactive sample to become $\mathrm{e}^{21}$ times its initial activity is
The distance of closest approach of an alpha particle from a nucleus when the alpha particle moves towards a nucleus with a kinetic energy 'E' is 'x'. The distance of closest approach when the alpha particle approaches the same nucleus with kinetic energy 0.4E is
The de Broglie wavelength associated with an electron accelerated through a potential difference of 2400 V is nearly
Klystron valve is used to produce
A 132 V ac source is connected to a pure inductor of inductance 140 mH. If the frequency of the ac source is 50 Hz, then the current passing through the inductor is
A wheel with 12 metallic spokes each 40 cm long is rotated with an angular speed of 15 rads$^{-1}$ in a plane normal to the horizontal component of earth's magnetic field. If the horizontal component of earth's magnetic field at the place is $4\times10^{-5}$ T, then the induced emf between the axle and the rim of the wheel is
If the magnetization of a bar magnet of area of cross-section 0.75 cm$^2$ and magnetic moment 2.7 Am$^2$ is $4 \times 10^5$ Am$^{-1}$, then the length of the magnet is