Thick lens will have shorter and consequently thin lens will have greater focal length. Because, For a thick lens, the optical path length of the light is more, than for a thin lens, thus, the bending of light will be more in case of a thicker lens. Consequently, it has a shorter focal length.
Evaporation is the process of converting a liquid into vapour in chemistry. The intermolecular force is required to prevent oil from evaporating at room temperature, as stated in the above sentence, Those preventing oil from evaporating at normal temperature.
<h3>What exactly is intermolecular force?</h3>
Intermolecular forces (IMF) are the attracting and repulsive forces that exist between a substance's molecules. These forces function as a bridge between individual molecules of a substance. An intermolecular force is an attractive force that exists between the positive (or protons) components of one molecule and the negative (or electrons) components of another molecule. This force influences the physical and chemical properties of a substance. The boiling point of a substance is proportional to the strength of its intermolecular forces; the higher the boiling point, the stronger the intermolecular forces. We can compare the strengths of intermolecular forces by comparing the boiling points of different substances.
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Answer:
1
Explanation:
The ratio of their nuclear densities is 1, as nuclear density is constant for all nuclei.
At the time of quark confinement, when the universe was 10-6 seconds old, there is found to be one additional proton for every billion antiprotons.
<h3>What is quark confinement?</h3>
Note that one quark is never found on its own but if particles are said to be smashed together and quarks are found, they are said to be like ends of rubber bands that expands.
Hence, At the time of quark confinement, when the universe was 10-6 seconds old, there is found to be one additional proton for every billion antiprotons.
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Stress = force / area
= 4.8 x 10³ / 1.2 x 10^-4
= 4 x 10⁷ N /m²
YOUNGS MODULAS = stress / strain
= 4 x 10⁷ / 1.2 x 10^11
= 3.3 x 10^-4
INCREMENT OF LENGTH = longitudinal length x intitial length
= ( 3.3 x 10^-4 ) x 4
= 13.2 x 10^-4 m
= 13.2 mm
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