Sounds of frequencies less than about ______ vibrations per second cannot be detected by the human ear.
Human ear can not detect sound less than 20 vibration per second or above than 20000 vibration per second.
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Peach and Nectarine requ...
Cotton variety bollgourd is resistant to
Urea contains:
Irrigation requirement of 90 days duration maize variety is 50 cm. How much area can be irrigated with a flow rate of 20 litre per second for 8 hours in...
Water requirement is equal to
What is a common emission from combustion engines used in transportation?
The principal photosynthetic pigment in blue-green algae is
Which plant growth regulator is commercially used in grapes for berry elongation?
What causes puffy fruit in tomatoes ?
Fair and remunerative price (FRP) is the minimum price at which rate sugarcane is to be purchased by sugar mills from farmers. The current FRP for the s...