What is relation of real life phenomena in nuclear physics , geophysics and mechanics?

Atoms in our lives is nuclear physics
crust core mantle of our earth is geophysics
while walking friction is mechanics these are some examples
remember physics is the most basic subject

Hello there

A real life phenomenon with nuclear physics can be AURORA BOREALIS
A beautiful pattern of light observed in the sky at North and south poles.

Well explaining it here will be quite complicated..so you better search it on YouTube so you can understand it better with animation and pictures.

Thanks

It may be 0 because the initial and final speed are equal

As a convex lens forms different types of images depending on the position of object, similarly a concave lens also forms different types of images when the object is placed at

1. at infinity
2. between infinity and optical centre.


when an object is placed at infinity, the two rays ao and bd running parallel to the principal axis get refracted at point o and d respectively and get diverged along the directions ox and dy respectively. these diverged rays i.e. ox and dy appears to intersect each other at the principal focus of the concave lens after extending back by dotted lines. therefore, in case of concave lens when the object is placed at infinity the image is formed at the principal focus, diminished (point sized), virtual and erect.


2. when the object is placed between infinity and optical centre

when an object ab is placed between infinity and optical centre of a concave lens, a ray of light ao is parallel to the principal axis diverges along the direction ox after refraction and appears to come from the principal focus f along the direction of. the other ray of light ac goes straight through the optical centre c of the concave lens without any deviation along the direction cy. as it is clear from the figure (given below) that both the refracted rays i.e. ox and cy are diverging in nature, so these rays appear to intersect each other at point a’ on the left side of the lens on producing back. hence, the image a’b’ formed in case is a virtual image is formed at the same side of the lens, between the optical centre and focus. also the image formed is diminished and erect.