# GK on Physics Questions-Part 1

GK on Physics Questions-Part 1, States of Matter

## GK on Physics Questions-Part 1

7 states of matters are,

Solid, Liquid, Plasma, Bose Einstein Condensate, Fermionic condensate, Quark Gluon Plasma.

Number of Elementry fermions in standard model-12

The term “God Particle” was first coined by Leon Lederman.

The term “Boson” was first coined by Paul Dirac

The word “quark” was coined by Murray Gel Man.

Energy carriers in the matter are known as Bosons

Bosons which carry electromagnetic force Photons

Bosons which carry weak nuclear force W & Z Bosons

Bosons which carry strong nuclear force Gluons

A particle that gives the property of mass to the matter is Higgs Boson

Unit of distance-Parsec (Parsec is a light-year distance unit)

1 Parsec is equal to 3.26 light year

Fundamental units can be expressed in three kinds of measuring systems such as CGS, MKS, and FPS

W= F x d

W= Work done by the force

F= Force applied

d= Distance to which object is displaced.

The Law of conservation of energy was put forward by Albert Einstein.

Einstein proposed the special theory of Relativity in 1905.

Einstein proposed the General theory of relativity in 1915.

1 Joule /sec=1 watt

1 horsepower = 746 watt

1 kilowatt = 1000 watts

1 megawatt= 1000000 watts

## Light

Study of light-Optics

Speed of light= 3 x 108 m/s

Time taken by sunlight to reach earth is 8 minutes 20 seconds

The medium in which the speed of light is the least Diamond

The medium in which density of light is minimum Vacuum

A particle which travels faster than light Tachyons

Unit of the wavelength of light Angstrom

Order of speed of light in different medium glass< water < air < vacuum

The direction in which the rainbow is formed in the morning West

The color of the sky in the moon Black

Time taken by moonlight to reach earth is 1.3 seconds

Light travels fastest in Vacuum

Light is a transverse wave.

Speed of light was first measured by Ole Christian Romer

Tachyons were discovered by ECG Sudarsan

When a Red Flower is observed through a blue glass plate, it appears as Black

Colour of green leaf in red light Black

Colour which is very sensitive to the human eye Yellow

Colour which is used in danger signals Red

Colors used in the scientific laboratory for indicating danger Yellow

The color used in fog lamp of vehicles Yellow light