Explanation

Optics is the branch of physics that studies light and its interactions with matter.

It including phenomena such as reflection, refraction, and dispersion.

Explanation

• A rivet is used to fasten two hard materials together.
• Such as metal plates or sheets.

Explanation

• Derived quantities are quantities that can be expressed in terms of fundamental quantities through multiplication, division, or raising to a power.
• Examples of derived quantities include area, volume, velocity, acceleration, force, and energy.
• These quantities are derived from the fundamental quantities and are not independent.

Explanation

• A series circuit is a circuit that provides only one path for the current to flow.
• If one component is removed or fails, the entire circuit is interrupted.

Explanation

• Frequency is the number of vibrations or oscillations produced by a vibrating body in one second.
• It's measured in Hertz (Hz), where 1 Hz equals one vibration per second.

Explanation

• Asteroids are irregularly shaped solid objects composed primarily of rocks and metals.
• They are found mainly in the asteroid belt between Mars and Jupiter.

Explanation

• When sound waves reach the ear drum, it vibrates and causes the small bones (ossicles) behind the eardrum to vibrate.
• These vibrations are then transmitted to the liquid in the inner ear (cochlea).
• Where they are detected by small hairs (hair cells) and converted into electrical signals that are sent to the brain via the auditory nerve.

Explanation

• Terrestrial planets are small, rocky planets that orbit close to the Sun, and include Mercury, Venus, Earth, and Mars.
• They are composed primarily of silicate rocks and metals, and have surfaces that are heavily cratered.

Explanation

• Aluminum is a non-ferrous metal.
• It is not capable of being magnetized or attracting magnets.

Explanation

• A four-level laser is a type of laser that has four energy levels involved in the lasing process.
• The He-Ne laser (Helium-Neon laser) is a common example of a four-level laser.
• It works by exciting helium atoms, which then transfer their energy to neon atoms, causing them to emit laser light.