Physics Nuclei Overview

Density of nucleus is of the order of

Power factor of series LCR circuit at resonance is

Density of nucleus is of the order of

Two radioactive substances X and Y originally have N₁ and N₂ nuclei respectively. Half life of X is half of the life of Y. After three half lives of Y, number of nuclei of both are equal.

The ratio  $\frac{N_1}{N_2}$  will be equal to:

The half life of a radioactive substance is 5 years. After x years a given sample of the radioactive substance gets reduced to 6/25% of its initial value. The value of x is___________.

In the following unclear reaction,

D $\stackrel{\alpha }{\to }{D}_1\stackrel{{\beta }^{-}}{\to }{D}_2\stackrel{\alpha }{\to }{D}_3\stackrel{\gamma }{\to }{D}_4$  

Mass number of D is 182 and atomic number is 74. Mass number and atomic number of D₄ respectively will be________

In the following unclear reaction,

D $\stackrel{\alpha }{\to }{D}_1\stackrel{{\beta }^{-}}{\to }{D}_2\stackrel{\alpha }{\to }{D}_3\stackrel{\gamma }{\to }{D}_4$  

Mass number of D is 182 and atomic number is 74. Mass number and atomic number of D₄ respectively will be________

A ray of light is incident at an angle of incidence $60°$ on the glass slab of refractive index $\sqrt[]{3}.$ After refraction, the light ray emerges out from other parallel faces and lateral shift between incident ray and emergent ray is $4\sqrt[]{3}$  cm. The thickness of the glass slab is _______cm.

Mass of Bromine, Selenium and Krypton are given as:-