# January 2023

## MOTION IN A STRAIGHT LINE

Mechanics is the oldest and fundamental branch of physics and it is the study of the state of rest as well as the state of motion of an object under the action of force.

## UNITS AND MEASUREMENTS – PART 2

This article is formulated according to the 2nd chapter in the NCERT Syllabus of 11th Std Physics OR 1st PUC Physics. Significant figures indicate the precision of the instrument.

## UNITS AND MEASUREMENTS – PART 1

The physical quantities which are independent of each other are called fundamental quantities. There are SEVEN fundamental quantities. They are Length, Mass, Time, Electric current, Thermodynamic temperature, Amount of substance, and Luminous Intensity.

## PHYSICAL WORLD

Science is organized, systematic, and formulated knowledge obtained through observations, experiments, and verifications.

## Surprising reasons why Pluto is not a planet!

Pluto lies far from the Sun, being the ninth largest body to orbit the Sun. From its discovery in 1930 to 2006 it was the ninth planet in the Solar System.

## How did India go to Mars on its first attempt?

Indian spacecraft known as Mangalyaan or Mars Orbiter Mission (MOM) became the first Asian spacecraft to orbit Mars when it entered the orbit of Mars on 24 September 2014.

## Who was the First Man to go to Space?

Technology was so progressed during World War 2, that now people could actually ride atop rockets and go to space.

## Why is the Sky Blue in the Daytime and Red at Sunset?

The sky appears blue in daytime and red at sunrise and sunset. What is the reason for this? To get the answer you should go into Molecular Physics.

## Why do trees change color in autumn?

You must have noticed that the leaves of most trees turn brownish in color before they fall. On the basis of autumn defoliation ( shedding of leaves), trees and plants can bed divided into two groups.

## CSIR NET Exam: All Things You Need to Know!!

The Joint CSIR-UGC NET exam is conducted for determining the eligibility for the awards of Junior Research Fellowship and Lecturership.

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