Explanation

• BTU stands for British Thermal Unit.
• It is a unit used to measure energy.
• It is commonly used in heating and air conditioning systems.
• It shows how much heat is needed to raise water temperature.
• 1 BTU ≈ 1055 Joules.

Last verified on 27-04-2026

Explanation

Explanation

• Meteorology is the scientific study of the atmosphere, especially weather and climate.
• It involves forecasting and understanding atmospheric phenomena.
• Meteorology is a branch of the atmospheric sciences.
• Metrology is the scientific study of measurement.

Last verified on 03-04-2026

Explanation

• Polarized glass reduces glare from sunlight.
• It works by filtering light waves in one direction.
• This reduces the intensity of reflected light.
• It improves visibility and protects eyes.
• That is why it is used in sunglasses.

Last verified on 26-04-2026

Explanation

• Rear view mirrors in vehicles are convex mirrors.
• They give a wider field of view.
• Images formed are virtual, upright, and smaller.
• This helps drivers see more traffic behind them.
• It is a curved mirror that bulges outward.
• It is commonly used in side mirrors of cars, buses, and motorcycles.

Last verified 26-04-2026