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Lateral Inversion is the phenomena of mirror in which left appears to be right and vice versa, while forming images.
A mirror is a surface that reflects a clear image.
An image that can be formed on the screen is known as a real image and the one which cannot be formed on the screen is known as a virtual image.

A mirror is a surface that reflects a clear image.
There can be two types of mirror: Plane Mirror & Spherical Mirror.
Coating behind Mirror – Tin Amalgam.

Convex mirror- spherical mirror whose reflecting surface is curved outwards.
Mirrors used as rear view mirror in automobiles- Convex mirror.
Security mirrors in store- Convex mirror.
Mirror used as a reflector in torch – Concave mirror.
Mirror used in periscope, kaleidoscope – Plane mirror.

Concave Mirror which is also called a converging mirror has its reflecting surface bulging inwards, i.e. away from the incident light.
Concave Mirror is used as reflector in torch light, search light, headlight of vehicles, etc..
Diverging mirror – Convex mirror.

A nautical mile measures distance and a knot measures speed.
A nautical mile is based on the circumference of the earth, and is equal to one minute of latitude. It is slightly more than a statute (land measured) mile (1 nautical mile = 1.1508 statute miles ). Nautical miles are used for charting and navigating.
A nautical mile is a unit of measurement used in air, marine, and space navigation, and for the definition of territorial waters.The derived unit of speed is the knot, one nautical mile per hour.

Cork disease – tuberculosis

Killer pneumonia- SARS

Slim Disease- AIDS

Myopia is a condition in which the length of the eye increases or the curvature of the lens or cornea of the eye increases.
This is a condition in which we can see nearby objects clearly and distant objects cannot be seen properly.
Lens used to correct myopia: concave lens
Left untreated, high myopia complications can lead to blindness, so regular eye exams are critical.

Isotones : Atoms having the same number of neutrons (N) but a different number of protons (Z)
Isobars : Atoms having the same mass number (A)
Isotopes : Atoms having the same number of protons (Z) but different number of neutrons (N)
Isomers : Atoms of the same element (same Z and N) but which are in different excited states
Two elements extracted by Humphrey Davy using electricity : Sodium and Barium.

Most electro possitive stable element(stable) -Caesium(Cs) .
4 Most number of isotopes-Tin(Sn)-10 Isotopes
Least number of isotopes-Hydrogen-3 Isotopes.
Element with least boiling and melting point-Helium (He)
Element having higher electro negativity -Fluorine(F).
Element having higher electro positivity(unstable)-Francium(Fr).

Neuro – Nervous System
Angina – Heart
Orthopeadics – Bones and Muscles

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