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

Explanation

The speed of sound in steel at 20°C is approximately 5100–5200 m/s, with 5130 m/s being a widely accepted value.

Sound travels faster in solids like steel due to their high density and elasticity compared to gases and liquids.