Question
What is the frequency of Ultrasonic
Waves?Solution
The range of human hearing is about 20Hz to 20,000 Hz. Ultrasound waves have frequencies more than 20,000 Hz(which is 20 kHz). As this is above the normal hearing range for humans, we cannot hear ultrasound.
Mean deviation is least when calculated about:
Agriculture and Agronomy are derived from
The persons who starts to adopt new practices quickly or at first are called_____
The branch of Horticulture that deals with the cultivation of vegetables is called
1.      What is the tagline of Soil Health card?
Hopper burn is a symptom of _____
CONTINOUS variation occurs in a population due to:
Foragial types of legs are found in _____ insect.
‘Kresek’ symptom is a characteristic symptom of which disease of rice?Â
 Major genes are responsible for
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