List of top Questions asked in AP EAPCET

A charged particle when enters a uniform magnetic field moves in a helical path. If its angular velocity is $ 4\pi \times 10^6 $ rad s$^{-1} $ and its velocity in the direction of magnetic field is $ 3 \times 10^5 $ ms$^{-1} $ then the pitch of the helix is

The threshold wavelength of a photosensitive material is equal to the frequency of H$_\alpha$ line of hydrogen. If a photon whose frequency equal to the frequency of H$_\beta$ line of hydrogen is incident on this photosensitive material, the maximum kinetic energy of the emitted photoelectrons is: (R -- Rydberg's constant, h -- Planck's constant and c -- speed of light in vacuum)

Match the following

Hydroponics was first demonstrated by

Choose the correct combinations from the following

A. Induce sprouting of Potato tubers - Ethylene
B. Kill the dicot weeds - Cytokinin
C. Increase in stalk length of grapes - Gibberellins
D. Induce apical dominance - Auxins

Choose the incorrect statements regarding Hirudinea

A. Male reproductive system has cirrus.
B. They are exclusively marine and tubicolous.
C. Fertilization is external and development is direct.
D. Clitellum is conspicuous during the breeding season only.

Assertion (A): Pneumaticity of bones is the unique feature of reptiles.
Reason (R): Air sacs associated with lungs of birds facilitate continuous oxygenation of blood.

One of the following is not a part of light band of myofibril.

A simple pendulum is suspended in a car moving on a circular track of radius $ R $ with a uniform speed of $ \sqrt{1.732 g R} $. The pendulum is making small oscillations in a radial direction about its equilibrium position with a time period $ T $. If the car is at rest, the time period of the pendulum is:

Consider the following two statements:
Statement I: Among Mg, Al, Mg$^2$, Al$^3$, the one having smallest size is Al$^3$
Statement II: Eu is having exceptionally high atomic radii among lanthanide elements The correct answer is:

The device used to detect infrared radiations is

At T(K), the equilibrium constant for the reaction $ A (g) \rightleftharpoons B (g) $ is $ K_c $. If the reaction takes place in the following form $ 2A(g) \rightleftharpoons 2B(g) $, its equilibrium constant is $ K'_c $. The correct relationship between $ K_c $ and $ K'_c $ is:

Observe the following solutions \[ \text{I. Black coffee} \quad \text{II. 0.2M NaOH} \quad \text{III. Lemon juice} \quad \text{IV. Lime water} \quad \text{V. Human Saliva} \quad \text{VI. Tomato juice} \] The number of solutions having pH range of 1-7 and 7-14, in the above list, is respectively

Four metal plates, each with surfa area $A$ on one side, are plad with separation $d$ as shown in the figure. The capacitan between a and b is ($\varepsilon_0$ -- permittivity of free spa)