Questions

Infrared radiation, what we experience as heat when we hold our hand near a warm object, is somewhat longer wavelengths than visible light. Visible light is simply electromagnetic radiation in a range of wavelengths that our eyes are sensitive to. Visible wavelengths range from 0.0007 milimeters for red light, through orange, yellow, green, and blue, to 0.0004 milimeters for violet light. Ultraviolet is shorter wavelengths than violet.

Longer the wavelength,lower the energy

The meanings of the given words are as follows:
Recalcitrant: having an obstinately uncooperative attitude towards authority or discipline
Peculiar: different to what is normal or
expected; strange Convivial: (of an atmosphere or event) friendly, lively, and enjoyable
Amenable: open and responsive to suggestion; easily persuaded or controlled
Docile: ready to accept control or instruction; submissive
Taciturn: (of a person) reserved or uncommunicative in speech; saying little
Withering: intended to make someone feel humiliated; scornful
Voluble: (of a person) talking fluently, readily, or incessantly
Turgid: swollen and distended or congested
Pendulous: hanging down loosely
Jocular: fond of or characterized by joking; humorous or playful
Therefore, it can be observed that option B i.e. ‘amenable, docile’ forms an antonym- antonym pair of ‘recalcitrant’.

The functional connection between two neurons is a Synapse.