A Metallic Sheet Has a Large Number of Parallel Slits,5

question 50

Multiple Choice

A metallic sheet has a large number of parallel slits,5.0 mm wide and 20 cm apart.This sheet 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 will occur? (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:

Connective

Often refers to connective tissue in biology, which supports, binds together, or separates other tissues or organs of the body.

Mucus

A slippery secretion produced by, and covering, mucous membranes primarily in the respiratory, digestive, and reproductive systems, aiding in protection and lubrication.

Muscle

Muscle is a tissue in animals that contracts to produce movement, consisting of smooth, skeletal, and cardiac types.

Nervous

Pertaining to the nerves or nervous system, the network in organisms for transmitting signals between different body parts.