The term energy is used to describe the capacity of a system to do work on another system. Energy of all types (Surface Tension, Kinetic, Potential etc.) have the same dimension and unit as that of Work. Both energy and work have the same dimensional formula of M1L2T–2. In the SI system, both have the same units of Newton meter.

Correct Option: C

The term energy is used to describe the capacity of a system to do work on another system. Energy of all types (Surface Tension, Kinetic, Potential etc.) have the same dimension and unit as that of Work. Both energy and work have the same dimensional formula of M1L2T–2. In the SI system, both have the same units of Newton meter.

Atmospheric pressure is basically the weight of air in the atmosphere above the reservoir, so the level of mercury continues to change until the weight of mercury in the glass tube is exactly equal to the weight of air above the reservoir. In areas of low pressure, air is rising away from the surface of the earth more quickly than it can be replaced by air flowing in from surrounding areas. This reduces the weight of air above the reservoir so the mercury level drops to a lower level. A slowly rising atmospheric pressure, over a week or two, typically indicates settled weather that will last a long time. A sudden drop in atmospheric pressure over a few hours often forecasts an approaching storm, with heavy rain and strong winds.

Correct Option: B

Atmospheric pressure is basically the weight of air in the atmosphere above the reservoir, so the level of mercury continues to change until the weight of mercury in the glass tube is exactly equal to the weight of air above the reservoir. In areas of low pressure, air is rising away from the surface of the earth more quickly than it can be replaced by air flowing in from surrounding areas. This reduces the weight of air above the reservoir so the mercury level drops to a lower level. A slowly rising atmospheric pressure, over a week or two, typically indicates settled weather that will last a long time. A sudden drop in atmospheric pressure over a few hours often forecasts an approaching storm, with heavy rain and strong winds.

A burn is an injury to the body’s tissue resulting from heat, chemicals, electricity or sunlight. Burns are often classified as first degree (those causing damage to the outer layer of the skin, the epidermis), second degree (causing deeper damage to the dermis, the layer beneath the epidermis),third degree (those causing the deepest and most severe damage — destruction of all layers of the skin and damage to tissues underneath. A steam burn is a burn caused by steam, usually from boiling water. Although the skin will not be charred, as would be the case with a flame burn, blisters and redness will appear. A third degree steam burn will penetrate deep into the flesh, and may be white, heavily blistered, and numb. The larger concern with steam burns is the airway, however. Inhaling steam can cause serious damage to the bronchial tubes, and could potentially lead to death.

Correct Option: C

A burn is an injury to the body’s tissue resulting from heat, chemicals, electricity or sunlight. Burns are often classified as first degree (those causing damage to the outer layer of the skin, the epidermis), second degree (causing deeper damage to the dermis, the layer beneath the epidermis),third degree (those causing the deepest and most severe damage — destruction of all layers of the skin and damage to tissues underneath. A steam burn is a burn caused by steam, usually from boiling water. Although the skin will not be charred, as would be the case with a flame burn, blisters and redness will appear. A third degree steam burn will penetrate deep into the flesh, and may be white, heavily blistered, and numb. The larger concern with steam burns is the airway, however. Inhaling steam can cause serious damage to the bronchial tubes, and could potentially lead to death.

Boyle’s law states that the absolute pressure and volume of a given mass of confined gas are inversely proportional, if the temperature remains unchanged within a closed system. Thus, it states that the product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant. The law was named after chemist and physicist Robert Boyle, who published the original law in 1662.

Correct Option: A

Boyle’s law states that the absolute pressure and volume of a given mass of confined gas are inversely proportional, if the temperature remains unchanged within a closed system. Thus, it states that the product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant. The law was named after chemist and physicist Robert Boyle, who published the original law in 1662.

In physics, radiation is a process in which energetic particles or energetic waves travel through vacuum, or through matter-containing media that are not required for their propagation. Waves of a massive medium itself, such as water waves or sound waves, are usually not considered to be forms of “radiation” in this sense. By contrast, gravitational waves, which are waves of space-time itself, qualify as a type of radiation. Heat from the sun also reaches earth by the process of radiation.

Correct Option: C

In physics, radiation is a process in which energetic particles or energetic waves travel through vacuum, or through matter-containing media that are not required for their propagation. Waves of a massive medium itself, such as water waves or sound waves, are usually not considered to be forms of “radiation” in this sense. By contrast, gravitational waves, which are waves of space-time itself, qualify as a type of radiation. Heat from the sun also reaches earth by the process of radiation.