## Fleming’s Left Hand Rule

When a conductor carrying a current is placed in a magnetic field, the conductor experiences a magnetic force. The direction of this force is always right angles to the plane containing both the conductor and the magnetic field, and is predicted by Fleming’s Left-Hand Rule. F is Force, B is Magnetic field, I is current. From the name …

## O Level Physics Formula List

This post contains all the important formulas that you need for GCE O Level Physics. (Equivalent to American High School Diploma) If you do not recognise any of the formulas listed here, you should go review the respective topic. For definitions, please visit All Definitions Needed For O Level. Measurements Physical quantity Base SI unit Mass (m) Kilogram (Kg) Length …

## Force on current-carrying conductor

When current-carrying conductor is placed in a magnetic field, it will experience a force when the magnetic field direction is not parallel to the current direction. The magnitude of the force is maximum when the magnetic field and current directions are mutually perpendicular to each other. The force decreases when the angle between the magnetic field and current directions is smaller …

## Application of converging lens

Magnifying glass For a magnifying glass to work, the object is placed at the focal point such that the image produced is magnified, upright and virtual. With the naked eye alone, the eye sees by focusing at its near point. Through a magnifying glass, the eye sees by focusing also at its near point, but now the image is enlarged. …

## Thin converging lenses

Any optical lens that is thicker in the middle than at the edges will make parallel light rays converge to a point, and is called converging lens. How does the lens works? A lens produces its focusing effect because light travels more slowly in the lens than in the surrounding air, so that refraction of a light beam occurs at …

## Converging Lens

This topic covers “Converging Lens” of O Level Physics. (Equivalent to American high school diploma) Sub-Topics: Thin converging lenses Ray diagrams for converging lens Application of converging lens Quiz: Click here for quiz.

## Total Internal Reflection

Total internal reflection refers to the complete reflection of a ray of light within an optically-denser medium from the surrounding surfaces of optically less dense media back into the denser medium. Light ray travel from an optically denser medium to a less dense medium. The angle of incidence must be greater than a certain angle, called the critical angle.   …