Explanation

An Electrocardiogram (ECG) records the electrical activity of the heart.

It helps diagnose heart conditions like arrhythmias, heart attacks, and other cardiac issues.

Explanation

Direct current is produced when electrons flow constantly in one direction.

It's abbreviated as "DC".

Since direct current flows in one direction only, its electrical pressure or voltage is always oriented in one direction, or "polarity".

Explanation

• The male reproductive part of a flower is called the Stamen.

It consists of two parts:

1. Anther (produces pollen grains)
2. Filament (supports the anther)

Explanation

Silicon is not the conductor

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Aluminum and gold are metals so they are good conductors of electricity.

Now graphite is an allotropic form of carbon and is the only nonmetal that can conduct electricity.

Silicon is a semiconductor. 

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VU LDC UDC FIA PAPER 27-12-2021

Explanation

An optical fiber is a flexible,

transparent fiber made by drawing glass  or plastic

To a diameter slightly thicker than that of a human hair.

Explanation

The elements of the periodic table sorted by atomic number

Atomic number Name chemical element                 Symbol

1                         Hydrogen                                             H

2                         Helium                                                     He

3                         Lithium                                                      Li

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RY 15-01-2023

Explanation

Explanation

The average distance between Earth and the Moon is approximately 384,400 km.

This distance can vary slightly due to the Moon's elliptical orbit around Earth.

Explanation

Acid rain is mainly caused by emissions of Sulfur dioxide and Nitrogen oxide in the atmosphere.

Acid rain mainly Causes health problem like Asthma.

Explanation

• The SI unit of energy is the Joule (J).
• It is the unit of energy, work, and heat.