List of top Physics Questions asked in AP EAPCET

The temperature of the earth without the greenhouse effect will be: Options:
The change in internal energy when 20 g of a gas is heated from $ 25^\circ C $ to $ 35^\circ C $ at constant volume is: Options:
The gravitational potential energy of a system of three masses $ m $, $ 2m $, and $ 3m $ placed at the three vertices of an equilateral triangle of side $ a $ is Options:
A ball is dropped from some height and after first collision with the ground if it reaches $ \frac{3}{4} $th of its original height, then the % loss of its energy is: Options:
A pendulum of time period one second is losing its mechanical energy due to damping. Its mechanical energy at time $ t = 0 $ is 45 J. After completing 15 oscillations, its mechanical energy is 15 J. The ratio of the damping constant and the mass of the object making damped oscillations is:
A solid sphere and a solid cylinder roll down without slipping along an inclined plane. If they start from rest from the top of the inclined plane, the ratio of the velocities of the solid sphere and solid cylinder when they reach the bottom of the inclined plane is:
The potential difference across the ends of a conductor is $ (50 \pm 3) $ V and the current through it is $ (5 \pm 0.1) $ A. The percentage error in the measurement of the resistance of the conductor is: Options:
The time taken by a boat to travel upstream to a certain distance and return back is 14 hours. If the velocity of boat in still water is 35 kmh$ ^{-1} $ and velocity of the stream is 5 kmh$ ^{-1} $, the distance travelled by the boat before it returns is
A radioactive element A with half life 3 hours decays to a stable element B. After a time $ t $, the ratio of A and B atoms is 1:16 then the time $ t $ in hours is
If the electric field of an electromagnetic wave is increased by 100%, then the energy density of the wave increases by
A capacitor and a resistor are connected in series to an ac source of variable frequency. When the frequency of the ac source becomes $ \frac{1}{3} $rd of its initial value, the current in the circuit decreases by 50%. The power factor of the circuit at the initial frequency is
The force between two spheres with charges +7 $ \mu C $ and -5 $ \mu C $ is F. If each sphere is given an additional charge of +2 $ \mu C $, the new force of attraction will be
A liquid of density $ 3000 \, \text{kg/m}^3 $ and coefficient of viscosity $ 0.1 \, \text{Pas} $ flows through a pipe with diameter $ 0.05 \, \text{m} $ with a velocity of $ 0.2 \, \text{m/s} $. The Reynolds number of the fluid is
At atmospheric pressure, 1 g of water has a volume of 1671 cm³ in vapor phase. The change in internal energy when 1 g of water changes from liquid to vapor phase at atmospheric pressure is
A hot fluid cools from 200°C to 100°C in 5 minutes. Then the time taken by it to cool from 100°C to 50°C is nearly (Room temperature = 30°C)
Two cars of different masses have same kinetic energy, then
Two boys A and B with masses 30 kg and 20 kg respectively are at the two extremes of a boat of mass 50 kg and length 5 m resting still on water. Boys A and B move towards each other and meet at the midpoint of the boat. During the process, the distance moved by the boat and boys is (Neglect friction between water and boat)
Two objects separated by a distance r gravitationally attract each other with force F. If the distance between them is tripled, the force of attraction between them is
A body of mass 90 g is connected to a string of 100 cm length and whirled in a horizontal circle. If the string can withstand a tension of 2.25 N, then permissible maximum velocity of the body is
From an elevated point 'A', a stone is projected vertically upwards. The velocity of the stone when it reaches a distance 'h' below 'A' is double its velocity when it was at a height 'h' above 'A'. The greatest height attained by the stone above 'A' is
For two vectors $ \mathbf{A} $ and $ \mathbf{B} $, if $ \mathbf{A} + \mathbf{B} = |\mathbf{A} - \mathbf{B}| $, then
What does Lenz's Law give ?
Frequencies in the UHF range normally propagate by means of:
The frequency of light emitted during the \(n = 4 \to n = 2\) transition in hydrogen is \( \frac{3}{7} \) times that of which transition in Li atom?
Which of the following is true about the coefficient of static friction (\(\mu_s\)) and the coefficient of kinetic friction (\(\mu_k\))