List of top Questions asked in TS EAMCET

Water flows through a horizontal pipe AB of non-uniform cross section. Water enters at A of area \(4cm^2\) with pressure \(10^5Nm^{-2}\) and velocity \(20ms^{-1}\). It leaves at B of area \(8cm^2\). The pressure at B is

A spherical rain drop of mass \(m\) falls vertically through air with a terminal velocity of \(0.2\ \mathrm{ms^{-1}}\). If \(27\) such identical rain drops combine to form a bigger spherical drop, then the terminal velocity of the bigger drop if it falls vertically through air is

If the fractional compression of water at the bottom of an ocean is \(1.5\times10^{-2}\), then the depth of the ocean is \[ \left( B=2.2\times10^9\,\mathrm{N\,m^{-2}}, \; g=10\,\mathrm{m\,s^{-2}} \right) \]

If W is the energy required to form a soap bubble of radius R, then energy required to increase radius from R to 3R is:

Water is flowing steadily with certain initial velocity vertically down from a tap of area of cross-section $1.8\text{ cm}^2$. At a distance 25 cm below the tap, area of cross-section of the stream of the water is $1.2\text{ cm}^2$. The mass of the water flowing from the tap in a time of 10 s is (Acceleration due to gravity $=10\text{ ms}^{-2}$)}

A body initially at rest at a certain height from the ground is falling freely under gravity. At a time of one second, the body is at a height of 120 m from the ground. At a time $t=4.5\,s$, if the potential energy of the body is K times its total energy, then the value of K is (Acceleration due to gravity $=10\,ms^{-2}$)

If the excess pressure inside a spherical mercury drop is \(1240\,Nm^{-2}\), then the radius of the mercury drop is:

The ratio of energies of forbidden bands of silicon and germanium is nearly

The resultant logic gate of the combination of logic gates given in the circuit is:

In common emitter configuration of a transistor, if the change in collector current is \(99.5\%\) of the change in emitter current, then the common emitter current amplification factor is:

A pure silicon with $6 \times 10^{28}$ atoms is doped with arsenic of 1 ppm concentration. If the intrinsic carrier concentration is $1.2 \times 10^{16} m^{-3}$, then the number of holes in the doped silicon is}

At a constant pressure of \[ 2\times10^5\ \mathrm{Nm^{-2}}, \] if the volume of \(4\) moles of a monoatomic gas changes from \(1000\) cc to \(1500\) cc, then the change in internal energy of the gas is

If the numerical value of the temperature of a body on Fahrenheit scale is \(80\) more than its numerical value on Celsius scale, then the temperature of the body is

In a Carnot's cycle, if $V_1$ and $V_2$ are respectively the initial and final volumes of the working substance during isothermal expansion process, $V_3$ and $V_4$ are respectively the initial and final volumes of the working substance during isothermal compression process, then the relation among $V_1, V_2, V_3$ and $V_4$ is

If \(t_1\) is the time taken for a body to cool from \(80^\circ\text{C}\) to \(75^\circ\text{C}\) and \(t_2\) is the time taken to cool from \(75^\circ\text{C}\) to \(70^\circ\text{C}\), then \[ t_1:t_2= \] \[ (\text{Temperature of surroundings}=30^\circ\text{C}) \]

Water flows through a horizontal pipe AB of non-uniform cross section. Water enters at A of area \(4cm^2\) with pressure \(10^5Nm^{-2}\) and velocity \(20ms^{-1}\). It leaves at B of area \(8cm^2\). The pressure at B is

The ratio of rms speeds of helium gas molecules at a temperature of \(127^\circ\text{C}\) and oxygen gas molecules at a temperature of \(527^\circ\text{C}\) is \[ (\text{Molar masses of helium and oxygen gases are }4\text{ and }32\text{ respectively}) \]

The temperatures of source and sink of a Carnot heat engine are $127^\circ C$ and $27^\circ C$ respectively. If the working substance is 2 moles of a rigid diatomic gas, then the decrease in internal energy during adiabatic expansion is: (R = 8.31 J mol$^{-1}$K$^{-1}$)

In a Carnot engine, the heat released to the sink is \(22\%\) less than the heat taken from the source. If the temperature of the source is \(127^\circ\text{C}\), then the temperature of the sink is:

When \(70\,\text{J}\) of heat is supplied to a rigid diatomic gas at a constant pressure \(P\), the change in the volume of the gas is \(\Delta V\). If the same amount of heat is supplied to a monoatomic gas at the same constant pressure \(P\), then the change in the volume of the monoatomic gas is

A Carnot engine operates between \(33^\circ C\) and \(133^\circ C\). During adiabatic expansion, relation is \(T\sqrt{V}=constant\). The work done by \(10\) moles during adiabatic expansion is

At constant pressure, if equal amounts of heat are supplied to a monoatomic gas and a rigid diatomic gas, then the ratio of the changes in the internal energies of the monoatomic and diatomic gases is:

The lengths of two copper wires A and B are 180 cm and 270 cm respectively. If the mass of wire A is twice the mass of wire B and the electrical resistance of wire A is \(200\Omega\), then the electrical resistance of wire B is:

A part of an electric circuit is shown in the figure. If the reading of the voltmeter is 100 V and the resistance of the voltmeter is 200 $\Omega$, then the value of the resistance $R_{2}$ is}

In a meter bridge, balancing point is at 25 cm. After shunting both resistances equally, balance shifts by 15 cm. Find $R_1$ and $R_2$.