A Metallic Sheet Has a Large Number of Slits,5

question 31

Multiple Choice

A metallic sheet has a large number of slits,5.0 mm wide and 20 cm apart,and is used as a diffraction grating for microwaves.A wide parallel beam of microwaves is incident normally on the sheet.What is the smallest microwave frequency for which only the central maximum occurs? (c = 3.00 × 10⁸ m/s)

• A) 0.50 GHz
• B) 0.70 GHz
• C) 1.0 GHz
• D) 1.5 GHz
• E) 2.0 GHz

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Definitions:

Unusual

Something that is not common, ordinary, or expected, often attracting attention due to its distinctiveness.

Neuronal Regeneration

The process by which neurons repair, regrow, or regenerate their structures, including axons and dendrites, after being damaged.

Central Nervous System

The part of the nervous system that includes the brain and spinal cord, responsible for processing and sending out information throughout the body.

Neurons

Electrically excitable cells in the nervous system that process and transmit information through electrical and chemical signals.