Explanation

The minimum angle of resolution (θ) for a lens of diameter (D) and light of wavelength (λ) passing through it can be expressed as:

𝜃= 1.22 𝜆 / 𝐷​

Where:

𝜆 is the wavelength of light

𝐷 is the diameter of the lens

The resolution power (R) is defined as the reciprocal of the angle of resolution:

𝑅 = 1 / 𝜃

Substituting the expression for 𝜃 into the equation for resolution power (R):

𝑅 = 1 / 1.22  𝜆 / 𝐷

Simplifying this expression:

𝑅 = 𝐷 / 1.22 𝜆 

So, the formula for the relation between resolution power (R) and the diameter of the lens (D) is:

𝑅 = 𝐷 / 1.22 𝜆

Explanation

In 1935, the Tobacco mosaic virus (TMV) was crystallized by Wendell Meredith Stanley.

Stanley's work on TMV contributed significantly to the understanding of viruses

He earned him the Nobel Prize in Chemistry in 1946

Explanation

Basic lead chromate is formed when lead chromate (PbCrO4) is boiled with dilute alkali hydroxide.

Here's the reaction:

PbCrO4 +OH- → PbO⋅PbCrO4 +H2O

In this process, the lead chromate reacts with the dilute alkali hydroxide to form basic lead chromate.

The alkali hydroxide used is typically a dilute solution of sodium hydroxide (NaOH) or potassium hydroxide (KOH).

Explanation

The equation of Bernoulli's theorem is not related to the turning of a musical instrument. 

Explanation

• The word ‘Scientia’ is derived from the Latin word Scientia which means ‘knowledge’.
• It is the field of human knowledge concerned with facts that are explained logically by rules, patterns, or principles.

Explanation

Lime water when used with butter to form butyric acid can cure acidity.

The butyric acid is acidic.

The lime water (soluble form of calcium hydroxide) is basic.

Acid & base mix & become neutral which cures the acidity

Explanation

Earth science is the study of the Earth's structure, properties, processes, and four and a half billion years of biotic evolution.

Understanding these phenomena is essential to the maintenance of life on the planet.

Geoscience also called Earth Science

Explanation

Aluminium is a chemical element with the symbol Al and atomic number 13.

Melting point: 660.3 °C

Density: 2.7 g/cm³

Block: p-block

Explanation

Pressure:

The speed of sound is independent of pressure

i.e. speed remains unchanged by the increase or decrease of pressure. 

Temperature:

The speed of sound is directly proportional to the temperature.

Therefore, as the temperature increases, the speed of sound increases.

Humidity:

The speed of the sound increases in humid air compared to the dry air

Because of the weight of water vapor

Explanation

The radius of the nucleus is about 10^5  times less than the radius of the atom.