Sᴄɪᴇηᴄᴇ Aηᴅ Cᴏᴍᴘᴜᴛᴇʀ Nᴏᴛᴇs™ 🎲

🖋 Uses of Concave Mirror (i) As a shaving mirror. (ii) As a reflector for the head lightsof avehicle,search light. (iii) In ophthalmoscope to examine eye, ear, nose by doctors. (iv) Insolar cookers.🖋 Uses of Convex Mirror. (i) As a rear-view mirror in vehicle because it provides themaximumrearfield of view and image formed is always erect. (ii) In sodium reflector lamp. 🖋 Total Internal Reflection :- Sparkling of diamond, mirage and looming, shinningof air bubbleinwater and optical Fiber are examples of total internal reflection.

• Image formed by a convex mirror is always virtual, erect and diminished. • Image formed by a concave mirror is generally real and inverted.

Viral Diseases Disease. Pathogen  Smallpox. Variola Virus  Chicken pox. Varicella zoster  Common cold. Rhino virus or corona virus JKSSB Study Fast (Iqbal Sir)  Influenza/Flu. Orthomixovirus  Mumps. Paramyxovirus  Encephalitis. Arbo virus (encephalitis virus)  AIDS. HIV virus or Retro virus  Dengue fever. Dengue virus (arbovirus)  Rabies (Hydrophobia). - Rhabdovirus or Rabies virus  Hepatitis. Hepatitis A, B, C virus

Bacterial Diseases Disease. Pathogen  T - Typhoid - Salmonella typhi  T - Tetanus. - Clostridium tetani.  T - Tuberculosis - Mycobacterium Tuberculosis  P - Pneumonia. - Streptococcus pnomonia.  P - Plague. - Yersinia pestis  P - Pertussis. - Hemophilea pertussis.  C - Cholera. - Vibro cholera  L - Leprosy. - Mycobacterium leprea

Some Important Metals and Non-metals  Bronze - Cu + Sn - In making coins, bell and utensils.  German Silver - Cu + Zn + Ni - In making utensils.  Gun Metal - Cu + Sn + Zn + Pb - In making guns, barrels, gears and bearings  Solder - Lead + Tin (Pb + Sn) For soldering.  Bell metal. - Cu + Sn. - For casting bells and statues.  Stainless steel -Fe + Cr + Ni + C. - For making utensils and surgical cutlery.  An alloy in which one of the components is mercury is