List of top Questions asked in TS EAMCET

A force of 20 N acts on a body at rest for a time of 2 s and then a force of 60 N acts for a time of 1.5 s in the opposite direction. If the final velocity of the body is 10 m/s in the direction of the 60 N force, then the mass of the body is:
A body of mass 4 kg is falling freely from rest from a height of 30 m from the ground. If the velocity of the body when it is at a height of 10 m from the ground is 10 m/s\(^1\), then the loss of energy due to air resistance on the body is:
A ball of mass 200 g moving with certain velocity collides with another ball of mass 600 g at rest. If the coefficient of restitution is 0.6, the ratio of the velocity of 600 g ball after collision and the velocity of 200 g ball before collision is:
A 31.4 kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter of 2 cm. The pressure exerted by the heel on the horizontal floor is (Acceleration due to gravity = 10 m/s\(^2\)):
If the length of a cylinder made with a material of Poisson’s ratio 0.4 is increased by 5\%, then the decrease in its diameter is:
The escape speed of a body from the surface of the earth is 11.2 km/s. The escape speed of a body from the surface of a planet whose mass is 8 times that of the earth and mean density same as that of the earth is:
Two soap bubbles of volumes \( 27V \) and \( 64V \) coalesce under isothermal conditions. The volume of the bigger bubble formed is:

Consider an isolated system of two concentric spherical black bodies. The inner sphere of radius \( R \) is at temperature \( T \), and the outer sphere of radius \( 4R \) is at temperature \( 2T \). The rate of absorption of radiant energy by the outer sphere is: 

Three identical rods are joined as shown in the figure. The left and right ends are kept at \( 0^\circ C \) and \( 90^\circ C \) as shown in the figure. The temperature \( \theta \) at the junction of the rods is:

If the average speed of molecules of an ideal gas in a container is doubled and the volume of the container is halved, then the increase in the pressure of the gas is:
A and B are two points of a string, in which a standing wave of wavelength \( \lambda \) is set up. If the distance between the points A and B is \( \frac{3\lambda}{4} \), then the phase difference between A and B is:
A convex lens of focal length 20 cm is immersed in a liquid of refractive index 1.3. If the refractive index of the material of the lens is 1.5, then the focal length of the lens when immersed in the liquid is:
Consider the wave represented by the equation \( y = (0.02) \sin \left( \pi x + 8\pi t \right) \), where all quantities are in SI units. The wavelength and speed of this wave respectively are \( y = (0.02) \sin \left( \pi x + 8\pi t \right) \).
A current carrying wire is first bent in the form of a circular loop and then bent in the form of a square loop. The ratio of the magnetic fields induced at the centres of the loops in the two cases is:
A photoelectron emitted when a light of wavelength 2480 \(\mathring{A}\) falls on a metal, enters a uniform magnetic field of \( \frac{1}{4} \times 10^{-5} \) T perpendicular to it and moves in a circular path of maximum radius 1 m. The work function of the metal is nearly:
If the total energy of the electron in the ground state of hydrogen atom is \(-13.6\) eV, then the potential and kinetic energies of an electron in this state respectively are:
What is the energy (in J) required to transfer the electron from \( n = 1 \) to \( n = 2 \) state in \( \text{Li}^{2+} \)? (K = constant \( 2.18 \times 10^{-18} \) J)

Match the following:

ElementList - IIAtomic Radius (in pm)
A. NaI.152
B. LiII.99
C. ClIII.64
D. FIV.186

The electronic configuration of four elements are given below:

Identify the sets containing isostructural molecules from the following 

I. \(\text{SiF}_4\), \(\text{SF}_4\)
II. \(\text{IO}_3^-\), \(\text{XeO}_3\)
III. \(\text{BH}_4^-\), \(\text{NH}_4^+\)
IV, \(\text{PF}_6^-\), \(\text{SF}_6\)
The correct option is

At \( T(K) \), three moles of an ideal gas is present in a 10 L vessel. If the kinetic energy of an ideal gas is \( 3000 \) J mol\(^{-1}\), the approximate pressure of the gas (in atm) is:
A hydrocarbon containing C and H has 92.3\% of C. When 52 g of hydrocarbon is completely burnt in oxygen, \( x \) moles of water and \( y \) moles of CO\(_2\) were formed. The liberated water is sufficient to liberate one mole of H\(_2\) when reacted with sodium metal. What is the weight (in g) of O\(_2\) consumed?
Identify the reaction for which \( K_p = K_c \):
Which of the following statements are not correct? i) \( \text{BeO has rock-salt structure} \)
ii) \( \text{BeSO}_4 \text{ is readily soluble in water} \)
iii) \( \text{The maximum coordination number of beryllium is four} \)
iv) \( \text{Be(OH)}_2 \text{ is basic in nature} \)
Observe the following compounds/ions: \[ H_3BO_3, \, [B(OH)_4]^-, \, BH_4^-, \, [BCI_3 \cdot NH_3], \, SiO_4^{2-} \] The number of compounds/ions with tetrahedral shape is: