List of top Physics Questions asked in TS EAMCET

When an element $_{90}^{232}\text{Th}$ decays into $_{82}^{208}\text{Pb}$, the number of $\alpha$ and $\beta^{-}$ particles emitted respectively are
The maximum wavelength of incident radiation required to ionize a hydrogen atom in its ground state is nearly
In a photoelectric experiment, the slope of the graph drawn between stopping potential along y-axis and frequency of incident radiation along x-axis is (Planck's constant = $6.6\times 10^{-34}$ Js)
The current amplification factor of a transistor in common emitter configuration is 80. If the emitter current is 2.43 mA, then the base current is
The area of cross-section of a potentiometer wire is $6 \times 10^{-7}$ m$^2$. The potential difference per unit length of the potentiometer wire when it is connected to a cell of negligible internal resistance and a resistor in series is $0.15$ Vm$^{-1}$. If the current through potentiometer wire is $0.3$A, then the resistivity of the material of the potentiometer wire is
A proton moving with a velocity of $8\times 10^5$ ms$^{-1}$ enters a uniform magnetic field normal to the direction of the magnetic field. If the radius of the circular path of the proton in the magnetic field is $8.3$ cm, then the magnitude of the magnetic field is (Charge of proton = $1.6\times 10^{-19}$ C and mass of the proton = $1.66\times 10^{-27}$ kg)
As shown in the figure, a uniform straight wire of length $30\sqrt{3}$ cm is bent in the form of an equilateral triangle ABC. A uniform magnetic field 2T is applied parallel to the side BC. If the current through the wire is 2A, the magnitude of the force on the side AC is
At a certain place in the magnetic meridian, the earth's magnetic field is twice its vertical component. The ratio of horizontal component of earth's magnetic field and the total magnetic field of the earth at that place is
A coil of resistance $16 \Omega$ is placed with its plane perpendicular to a uniform magnetic field whose flux ($\phi$ in $10^{-3}$ weber) changes with time (t in second) as $\phi = 5t^2+4t+2$. The induced current at time $t=6$ seconds is
The electrostatic force between two charges kept in air is F. If 30% of the space between the charges is filled with a medium, then the electrostatic force between the charges becomes $\frac{F}{2.56}$. The dielectric constant of the medium is
729 small identical spheres each charged to an electric potential 3V combine to form a bigger sphere. The electric potential of the bigger sphere is
The distance for which ray optics becomes a good approximation for an aperture of 0.3 cm and a light of wavelength 6000 $\text{\AA}$ is
A straight metal rod of length 6 cm is placed along the principal axis of a concave mirror of focal length 9 cm such that the end of the rod closer to the mirror is at a distance of 15 cm from the pole of the mirror. The length of the image of the rod is
A ray of light incidents at an angle of $9.3^\circ$ on one face of a small angle prism of refracting angle $6^\circ$. If the ray of light emerges normally from the second face, the refractive index of the material of the prism is
A metal metre scale that is accurate up to 0.5 mm is made at a temperature of 25$^\circ$C. The range of temperatures within which it can be used is (Coefficient of linear expansion of the metal = $10^{-5}$ /$^\circ$C)
A steel pendulum clock manufactured at 32$^\circ$C and working at 47$^\circ$C is nearly (Coefficient of linear expansion of steel = $12 \times 10^{-6}$ /$^\circ$C)
The air columns in two tubes closed at one end vibrating in their fundamental modes produce 2 beats per second. The number of beats produced per second when the same tubes are vibrated in their fundamental mode with their both ends open are
A car moving towards a cliff emits sound of frequency 'n'. If the difference in frequencies of the horn and its echo heard by the driver of the car is 10% of 'n', then the speed of the car is nearly (Speed of sound in air is 336ms$^{-1}$)
The ratio of the average translational kinetic energies of hydrogen and oxygen at the same temperature is
A steel rod with a circular cross-section of diameter 1cm and another steel rod with a square cross-section of side 1cm have equal mass. If the two rods are subjected to same tension, the ratio of the elongations of the two rods is
Which of the following is incorrect about the gravitational force between two bodies?
If the length of a thin uniform rod is 'L' and the radius of gyration of the rod about an axis perpendicular to its length and passing through one end is K, then K:L=
The maximum length of water column that can stay without falling in a vertically held capillary tube of diameter 1mm and open at both the ends is (Acceleration due to gravity = 10 ms$^{-2}$ and surface tension of water = 0.07 Nm$^{-1}$)
The force (F in newton) acting on a particle of mass 90 g executing simple harmonic motion is given by $F+0.04\pi^2y=0$, where y is displacement of the particle in meter. If the amplitude of the particle is $\frac{6}{\pi}$ m, then the maximum velocity of the particle is
A solid sphere of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal surface. The ratio of the rotational and translational kinetic energies of the sphere is