Explanation

The speed of sound is maximum in solids because particles are tightly packed, allowing faster vibration transfer.

In iron, sound travels around 5120 m/s, much faster than in air (343 m/s) or water (1482 m/s).

Explanation

Femto (f) is a prefix in the metric system that represents 10⁻¹⁵ (one quadrillionth).

It is commonly used in physics and chemistry, such as femtoseconds (fs) = 10⁻¹⁵ seconds.

Explanation

Heat transfer occurs through conduction, convection, and radiation.

Condensation is a phase change process (gas to liquid).

It is not a heat transfer method.

Explanation

Explanation

• Red (R) Green (G) and blue (B) colors are known as primary colors of light.
• Because of mixing these three colors we are able to make all possible colors.

Key Point

The primary colors of Pigment is:

• Red
• Yellow
• Blue