Recent questions tagged atomic and nuclear physics

+1 vote

1 answer

Energy required for the electron excitation in Li^2+ from the first to the third Bohr orbit is

asked Mar 28, 2019 in Physics by kratos

+3 votes

1 answer

The Bohr orbit radius for the hydrogen atom (n = 1) is approximately 0.53 . The radius for the first excited state (n = 2) orbit (in ) is :

asked Mar 26, 2019 in Physics by kratos

+1 vote

1 answer

If the velocity of a particle is increased 3times then the percentage decreases in its Debroglie’* wavelength

asked Mar 24, 2019 in Physics by kratos

+2 votes

1 answer

What does carbon dating method indicate ?

asked Mar 23, 2019 in Chemistry by kratos

+3 votes

1 answer

define ionisation energy and ionisation potential distinguish between them

asked Mar 21, 2019 in Physics by kratos

+3 votes

1 answer

Work function of metal A is equal to the ionisation energy of hydrogen atom in first excited state. Work function of metal B

asked Mar 20, 2019 in Physics by kratos

+3 votes

1 answer

A diatomic molecule has moment of inertia I. By Bohr’* quantization condition its rotational energy in the n^th level (n = 0 is not allowed) is

asked Mar 16, 2019 in Physics by kratos

+3 votes

1 answer

The centre of mass of a non uniform rod of length L whose mass per unit length λ varies as λ ∝ x^2

asked Mar 15, 2019 in Physics by kratos

+3 votes

1 answer

The electron in the hydrogen atom is moving with a speed of 2.3 × 10^6 m/* in an orbit of radius 0.53 .

asked Mar 7, 2019 in Physics by kratos

+1 vote

1 answer

A human body has a surface area of approximately 1 m^2.

asked Mar 6, 2019 in Physics by kratos

+1 vote

1 answer

An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.55 × 10^4 N C^−1 in Millikan’* oil drop

asked Feb 27, 2019 in Physics by kratos

+2 votes

1 answer

The transition metal used in X-rays tube is-

asked Feb 26, 2019 in Physics by kratos

+1 vote

1 answer

In beta plus decay (a) antineutrino is produced with electron (b) neutrino is produced with positron

asked Feb 24, 2019 in Physics by kratos

+2 votes

1 answer

The mass of a 73Li nucleus is 0.042 u less than the sum of the masses of all its nucleons.

asked Feb 20, 2019 in Physics by kratos

+3 votes

1 answer

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 :

asked Feb 19, 2019 in Physics by kratos

+3 votes

1 answer

What is the meaning of quantization of energy?

asked Feb 19, 2019 in Physics by kratos

+2 votes

1 answer

An oil drop of n excess electrons is held stationary under a constant electric field E in Millikan’* oil drop experiment.

asked Feb 19, 2019 in Physics by kratos

+3 votes

1 answer

If the plank’* constant would be double the present value, in the Bohr’* model for hydrogen atom,

asked Feb 19, 2019 in Physics by kratos

+2 votes

1 answer

Statement-I: As the distance x of a parallel ray from axis increases, the focal length decreases.

asked Feb 18, 2019 in Physics by kratos

+2 votes

1 answer

Difference between isotope and isobar with example.

asked Feb 16, 2019 in Physics by kratos

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