Physics and Electronics Quiz

Measurement of Sea Depth

• The depth of the sea is typically measured in meters (m) or feet (ft).
• Bathymetry is the study of underwater depth of ocean floors, using sonar technology for accurate measurements.

Atom Bomb Principle

• An atom bomb operates on the principle of nuclear fission.
• During fission, heavy atomic nuclei such as uranium-235 or plutonium-239 split into smaller nuclei, releasing huge amounts of energy.

Correction of Astigmatism

• Astigmatism is commonly corrected using cylindrical lenses in eyeglasses or contact lenses.
• Corrective lenses help to refocus light correctly onto the retina, improving vision clarity.

Equal Temperature of Fahrenheit and Centigrade

• The Fahrenheit and Celsius (Centigrade) scales equal each other at -40 degrees.
• This unique point is the temperature at which both temperature scales converge.

Energy Conversion in Batteries

• In batteries, chemical energy is converted into electrical energy.
• This conversion occurs through electrochemical reactions generating electric current to power devices.