Correct Answer: The opinion of the majority  

Solution : The Correct Answer is-  The opinion of the majority  

The public's ability to express their displeasure with politicians who refuse to consider their opinions and remove them from office can serve as a check on leadership. The general consensus on a

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Here is a List of some of the key important topics which were mainly focused in previous years EMCET question papers-

Bohr's radius and it's principles, schrodinger wave equation, Heisenberg Uncertainty principle, angular momentum, equation for radius and velocity of an electron, principal and azimuthal Quantum numbers, magnetic

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The concept originated in 1905 by Albert Einstein's explanation of the photoelectric effect Photon, also called light quantum In physics, a photon is a bundle of electromagnetic energy. It is the basic unit that makes up all light. The photon is sometimes referred to as a "quantum" of

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Henry Moseley developed his own law named Moseley's Law. This law established a relationship between atomic number of element and frequency of X-rays of that atom.

According to this law, the square root of frequency of X-rays imparted by elements is directly proportional to the atomic number of

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Matter waves are the waves that are associated with a moving quantum particle. These waves interfere like ordinary waves in space, and the regions where these waves interfere constructively are the most probable regions for the presence of the associated particle.

In phase means that the phase angle

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Postulates of Bohr's atomic model are described below :-

• Electrons revolve in definite circular around nucleus.
• As long as they revolve, they neither lose nor gain energy. Such orbits are called stationary orbits.
• When an electron jumps from an orbit of higher energy to lower energy it release

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Mass number = Number of protons + Number of neutrons

Atomic number = number of protons or number of electrons

Atomic number of zinc = 30 i.e., has 30 electrons.  In dipositive ion 2 electrons are lost, so, 28 electrons are present.

Mass number = 70

70 =

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As He+ becomes H after removal of electron and probable of finding an electron by multiplying the square of the wave function of the spherical is orbital . so the most probable radius is 26.5 pm as it sums up when surface area is being used instead of volume

Bohr’s model includes a small positively charged nucleus in center which is  surrounded by negatively charge electrons moving around the nucleus in orbits. Bohr model showed that the energy of an electron was inversely dependent on the distance between the center(nucleus) and the electron.

Postulates of Bohr's Model of an

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Could please mention for which exam you want to take the mock tests,

kindly mention the exam name so it is better to answer you clearly