List of top Questions asked in TS EAMCET

A train with an axle of length 1.66 m is moving towards north with a speed of 90 km/h. If the vertical component of the earthâ€™s magnetic field is $0.2 \times 10^{-4}$ T, the emf induced across the ends of the axle is:

A wooden cube of side 10 cm floats at the interface between water and oil with its lower surface 3 cm below the interface. If the density of oil is 0.9 g/cmÂ³, the mass of the wooden cube is:

An aircraft executes a horizontal loop of radius 9 km at a constant speed of 540 km/h. The wings of the aircraft are banked at an angle of

A body thrown vertically upwards from the ground reaches a maximum height ‘h’. The ratio of the kinetic and potential energies of the body at a height 40\% of h from the ground is

Normally a capacitor is connected across the output terminals of a rectifier to

A boy standing on a platform observes the frequency of a train horn as it passes by. The change in the frequency noticed as the train approaches and recedes from him with a velocity of 108 km/h (speed of sound in air = 330 m/s) is:

A particle of mass 4 mg is executing simple harmonic motion along x-axis with an angular frequency of 40 rad/s. If the potential energy of the particle is $V(x) = a + bx^2$ , where $V(x)$ is in joule and $x$ is in meter, then the value of $b$ is:

The diameter of the objective of a telescope is 3.6 m. The limit of resolution of the telescope for a light of wavelength 540 nm is:

The difference between the fundamental frequencies of an open pipe and a closed pipe of the same length is 100 Hz. The difference between the frequencies of the second harmonic of the open pipe and the third harmonic of the closed pipe is:

The thickness of a uniform rectangular metal plate is 5 mm and the area of each surface is 3750 cm $^2$ . In steady state, the temperature difference between the two surfaces of the plate is 14Â°C. If the heat flowing through the plate in one second from one surface to the other surface is 42 J, then the thermal conductivity of the metal is:

The excess pressure inside a soap bubble of radius 0.5 cm is balanced by the pressure due to an oil column of height 4 mm. If the density of the oil is 900 kg m $^-3$ , then the surface tension of the soap solution is:

Two point charges of magnitudes $-8 \mu C$ and $+32 \mu C$ are separated by a distance of 15 cm in air. The position of the point from the $-8 \mu C$ charge at which the resultant electric field becomes zero is:

If half of the space between the plates of a parallel plate capacitor is filled with a medium of dielectric constant 4, the capacitance is $C_1$ . If one-third of the space between the plates of the capacitor is filled with the medium of dielectric constant 4, the capacitance is $C_2$ . If in both cases, the dielectric is placed parallel to the plates of the capacitor, then $C_1 : C_2$ is:

A small-angled prism is made of a material of refractive index $\frac{3}{2}$ . The ratio of the angles of minimum deviations when the prism is placed in air and in water of refractive index $\frac{4}{3}$ is:

A solid sphere at a temperature $T$ K is cut into two hemispheres. The ratio of energies radiated by one hemisphere to the whole sphere per second is:

The potential difference between the ends of a straight conductor of length 20 cm is 16 V. If the drift speed of the electrons is $2.4 \times 10^{-4}$ m/s, the electron mobility in $m^2 V^{-1} s^{-1}$ is:

The potential difference $V$ across the filament of the bulb shown in the given Wheatstone bridge varies as $V = i(2i + 1)$ , where $i$ is the current in ampere through the filament of the bulb. The emf of the battery ( $V_a$ ) so that the bridge becomes balanced is:

The ratio of the specific heat capacities of a gas is 1.5. When the gas undergoes an adiabatic process, its volume is doubled and pressure becomes $P_1$ . When the gas undergoes isothermal process, its volume is doubled and pressure becomes $P_2$ . If $P_1 = P_2$ , the ratio of the initial pressures of the gas when it undergoes adiabatic and isothermal processes is:

Water flows through a horizontal pipe of variable cross-section at the rate of 12 $\pi$ litres per minute. The velocity of the water at the point where the diameter of the pipe becomes 2 cm is:

Three particles A, B, and C of masses $m$ , $2m$ , and $3m$ are moving towards north, south, and east, respectively. If the velocities of the particles A, B, and C are $6$ m/s, $12$ m/s, and $8$ m/s respectively, then the velocity of the center of mass of the system of particles is:

When 54 g of ice at $-20^\circ C$ is mixed with 25 g of steam at $100^\circ C$ , then the final mixture at thermal equilibrium contains:

If the length of a string is $P$ when the tension in it is 6 N and its length is $Q$ when the tension in it is 8 N, then the original length of the string is:

A thin uniform wire of mass $m$ and linear mass density $\rho$ is bent in the form of a circular loop. The moment of inertia of the loop about its diameter is:

A block of mass $m$ with an initial kinetic energy $E$ moves up an inclined plane of inclination $\theta$ . If $\mu$ is the coefficient of friction between the plane and the body, the work done against friction before coming to rest is: