Explanation

Plaster of Paris changes into gypsum on mixing with water 

It is commonly called P.O.P. is calcium sulfate hemihydrate.

The chemical formula of plaster of Paris  is CaSO4.1/2 H2O

Crystals of gypsum are produced when Plaster of Paris is mixed with water 

Gypsum is calcium sulfate dihydrate and a mineral used in cement manufacturing.

It helps in controlling the rate of hardening of the cement. 

Explanation

. LASER  stands for Light Amplification by Stimulated Emission of Radiations

LASER types

• Gas LASER
• Semiconductor LASER
• Chemical LASER
• Liquid or Dye LASER
• Excimer LASER

Properties of LASER

Explanation

Ice (solid water) is formed from molecules held together by hydrogen bonds, making it a molecular solid.

Explanation

Oxygen cannot be detected directly in an organic compound using common detection methods, unlike chlorine, nitrogen, and phosphorus.

Explanation

The embryological stages of all vertebrates show similarities in anatomical features, reflecting a common evolutionary origin.

Explanation

Actaea spicata, the baneberry or herb Christopher,

Actaea spictra is a species of flowering plant in the genus Actaea,

Actaea spicata is native from Europe to western Siberia and northern Iran.

Explanation

 Bronchial Asthma is a reversible inflammatory condition of the airways

Inflammation:

The primary characteristic of asthma is chronic inflammation within the airways, involving the lining of the bronchial tubes. 

Reversibility:

This inflammation and resulting airway obstruction can be reversed with medication, allowing airflow to improve. 

Triggers:

Asthma symptoms can be triggered by various factors like allergens, exercise, cold air, or viral infections. 

Symptoms:

Common symptoms include wheezing, coughing, chest tightness, and shortness of breath. 

Explanation

This formula is the Lorentz force law

And describes the force experienced by a current-carrying conductor in a magnetic field.

F=BILsin(θ)

F is the force acting on the conductor (in Newtons, N).

B is the magnetic field strength (in Tesla, T).

I is the current flowing through the conductor (in Amperes, A).

L is the length of the conductor that is perpendicular to the magnetic field (in meters, m).

θ is the angle between the current's direction and the magnetic field's direction.

Explanation

λ (lambda) is indeed the decay constant. 

The decay constant, λ "lambda", the reciprocal of the mean lifetime (in s−1), sometimes referred to as simply decay rate
The mean lifetime, τ "tau", is the average lifetime (1/e life) of a radioactive particle before decay.

These are related as follows:

Explanation