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.

Explanation

A concave lens causes light rays to diverge or spread apart after passing through it.

That's why it’s also called a diverging lens.

Explanation

The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second.

A universal constant is known in equations as "c," or light speed.

The speed of light in air is 2.9 × 10⁸ m/s.