Explanation

• When light enters from a vacuum into glass, its velocity decreases.
• This is because light travels at a speed of approximately 299,792,458 meters per second (m/s) in a vacuum, but it travels at a slower speed in a medium with a higher refractive index, such as glass.

Explanation

Just as grain is a small particle of salt, a chip is a small piece of glass.

The relationship is part to whole, showing a tiny fragment or unit of a larger substance.

Explanation

• Vitamins A, D, E, and K are fat-soluble vitamins.
• Fat-soluble vitamins are absorbed by the body along with dietary fats.
• They are present in foods that contain fats.
• The body stores these vitamins in the liver and fat tissue when they are not in use. 
• Megadoses of fat-soluble vitamins can be toxic.

Explanation

• The idiomatic phrase "not turn a hair" means to remain completely calm and unflappable, even in the face of danger or adversity.
• It describes someone who is fearless, courageous, and unafraid to take risks.

Explanation

• Equestrian refers to a person who rides a horse, especially as a sport or recreation. It can also refer to something related to horse riding or horses in general.
• Egoist: This word refers to a person who is excessively self-interested or egotistical, and has no relation to horse riding.
• Germicide: This word refers to a substance that kills germs or microorganisms, and has no relation to horse riding.
• Impassable: This word means unable to be passed or traversed, and has no relation to horse riding.

Explanation

• Fastidious refers to someone who is meticulous, demanding, and difficult to please, especially in regards to food, taste, or standards.
• Inflammable: This word means capable of being easily set on fire or ignited, and has no relation to being hard to please.
• Incorrigible: This word means someone who is unable to be corrected or reformed, often in a playful or mischievous sense, but doesn't necessarily imply being hard to please.
• Deteriorate: This word means to become worse or decline in quality, and has no relation to being hard to please.

Explanation

Probity means سچائی

Dishonesty means بے ایمانی۔

Explanation

• In a maximization or minimization problem, the objective function represents the quantity being optimized (maximized or minimized). The coefficients of the variables in the objective function determine the direction of the optimization.
• A negative coefficient value in the objective function indicates that an increase in the value of the corresponding variable (x) leads to a decrease in the value of the objective function (z).

Explanation

Explanation