Fiber | MCQs

Explanation

Thomas O. Mensah is a Ghanaian-American chemical engineer and inventor.

He joined Corning Glass Works in 1983, working on fiber optics research in Sullivan Park, New York.

Charles Kuen Kao is known as the "father of fiber optic communications."

Shirley Ann Jackson made a breakthrough in fiber optics.

Explanation

Shirley Ann Jackson (1946-present) is a theoretical physicist.

Her research and experiments paved the way for the creation of:

• fiber optic cables
• touch-tone telephones
• caller ID
• and call waiting.

Awards: National Medal of Science for Physical Science

while

Fiber optics was invented by Thomas Mensah

ND17-1-2023

Explanation

Fiber optics uses light to transmit data at high speeds through thin glass or plastic fibers.

It is mainly used in communication networks like internet, telephone, and cable TV.

Explanation

Explanation

• Fiber optic technology uses cables made of thin strands of glass or plastic fibers to transmit data as light signals.
• It providing high-speed and high-capacity communication.

Explanation

In flowering plants, xylem is composed of four types of tissues:

1. Tracheids
2. Vessel elements
3. Xylem fibers
4. Xylem parenchyma

Explanation

In plants, the cell wall is primarily composed of strong fibers of cellulose, a type of carbohydrate.

Cellulose is a polymer of glucose molecules that provides structural support, rigidity, and protection to the plant cell.

Explanation

The true potential of optical fiber is fully exploited when multiple beams of light at different frequencies are transmitted on the same fiber. 

Explanation

Dietary fiber has numerous health benefits, including:

• Preventing or relieving Constipation: Fiber helps promote regular bowel movements and prevents constipation by adding bulk to stool and softening it.
• Lowering diabetes risk: Soluble fiber, found in foods like fruits, vegetables, and legumes, can slow sugar absorption and improve insulin sensitivity, reducing the risk of developing type 2 diabetes.
• Reducing Heart disease risk: Fiber helps lower cholesterol levels, blood pressure, and inflammation, all of which can contribute to heart disease.

Explanation

• Potato, wheat, rice, corn, and sweet fruits are all rich in carbohydrates.
• Carbohydrates are an important source of energy for the body.