List of top Physics Questions asked in AP EAMCET

If the ratio of lengths, radii, and Young's moduli of steel and brass wires are \(a\), \(b\), and \(c\) respectively, their respective loads are in the ratio 5:3, then the corresponding ratio of increase in their lengths would be:

Two bodies of masses \( m_1 \) and \( m_2 \) are initially at rest at an infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. The relative velocity of approach at a separation distance \( r \) between them is:

A pan with a set of weights attached to a light spring oscillates with a time period of 0.6 s. When an additional weight is added, the time period becomes 0.7 s. The extension due to the additional weight is:

A spring with spring constant \( K \) stores 5 J energy when stretched by 25 cm. It was fixed at one end in vertical position and the other end is attached by mass \( m \). Its frequency is 5 oscillations/sec. Then the values of \( m \) and \( K \) are:

A thin circular ring and a circular disc have the same mass and moment of inertia about their centers perpendicular to the plane.
Then the ratio of their radii is:

If the earth shrinks until its radius becomes \(\frac{3}{4}\) of its original, the new duration of the day would be (mass unchanged):

A truck of mass 1200 kg moves over an inclined plane raising 1 in 20, with a speed of 18 kmph. The power of the engine is
(g = 10 m/s\(^{-2}\)):

A stone is projected at an angle of 30° to the horizontal. The ratio of kinetic energy at the point of projection to the potential energy at the highest point of flight will be:

The displacement \( x \) of a particle moving in one direction is given by \( t = \sqrt{x} + 3 \), where \( x \) is in meters and \( t \) is in seconds. Its displacement when its velocity becomes zero is:

Force is given by the expression \( F = A \cos(Bx) + C \cos(Dt) \), where 'x' is displacement and 't' is time. The dimensions of \( \frac{D}{B} \) are the same as that of:

Two light waves of intensities \( I \) and \( 2I \) superimpose on each other. If the path difference between the light waves reaching a point is 12.5% of the wavelength of the light, then the resultant intensity at the point is (Both the light waves have the same wavelength)

A particle of mass 0.5 g and charge 10 \(\mu\)C is subjected to a uniform electric field of 8 NC\(^{-1}\). If the particle is initially at rest, the velocity of the particle after a time of 5 seconds is

Current sensitivities of two galvanometers \( G_1 \) and \( G_2 \) of resistances 100 Ω and 50 Ω are \( 10^8 \) div/A and \( 0.5 \times 10^5 \) div/A respectively. The galvanometer in which the voltage sensitivity is more is:

The relation between \(\mu\) and \(H\) for a specimen of iron is \(\mu = \left[ \frac{0.4}{H} + 12 \times 10^{-4} \right] \text{Hm}^{-1}\). The value of \(H\) which produces flux density of 1 T will be (\(\mu\) = magnetic permeability, \(H\) = magnetic intensity)

In a circuit, the current falls from 14 A to 4 A in a time 0.2 ms. If the induced emf is 150 V, then the self-inductance of the circuit is:

For plane electromagnetic waves propagating in the positive Z-direction, the combination which gives the correct possible direction for \( E \) and \( B \) fields respectively is:

A photon incident on a metal of work function 2 eV produced a photoelectron of maximum kinetic energy of 2 eV. The wavelength associated with the photon is:

In a nuclear reactor, the fuel is consumed at the rate of \( 1 \times 10^{-3} \) gs\(^{-1}\). The power generated in kW is:

In the diodes shown in the diagrams, which one is reverse biased?