The frequency of ultrasound wave is typically –
Ultrasound is a cyclic sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from "normal" (audible) sound based on differences in physical properties, only the fact that humans cannot hear it. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.
Which of the following given options does not have a cell wall?
The rural development projects and men behind them are listed below. Which of the following is correctly matched?
1. Bhoodan Movement – Albert ...
Moisture content for safe storage of wheat, barley, maize is ____
Crops like coffee, coconut and arecanut comes under which branch of horticulture?
A___________ is a dense, compact cluster of small, usually sessile flowers (florets) closely arranged on an enlarged receptacle. This characteristic inf...
The upper part in the grafting process is termed as
The period over which irrigation water is to be supplied for the production of any crop is called _____
The scientific name of prickly pear is ____
Production of special crops in relatively large quantities for distant market is done in which type of gardening?
Which type of antenna is found in honey bee?
