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Wheat is primarily a crop of mid-latitude grassland and requires a cool climate with moderate rainfall. The ideal wheat climate has winter temperature 10°C -15°C and summer temperature varying from 21°C-26°C. The temperature should be below at the time of sowing but as the harvesting time approach higher temperature are required for proper ripening of the crop. Wheat thrives well in areas receiving an annual rainfall of about 75 cm, annual rainfall of 100 cm is the highest limit of wheat cultivation. Although wheat can be grown in a variety of soils, well drained fertile, friable loams and clay loams are the best suited soils for wheat cultivation. It also grows well in the black soil of the Deccan plateau.
Newton's rings can be obtained in:
The resistance of a conductor ________ and a semiconductor _________ on heating.
The radii of curvature of the faces of a double convex lens are 20 cm and 30 cm. If focal length of the lens is 36 cm find the refractive index of t...
Which of the following is an example of longitudinal waves in a gas medium?
The point where the total mass of a body is considered to be concentrated is known as what?
In a charged conductor, where do the electrical charges tend to reside?
What do we call sound waves with frequencies below 20 Hz?
Match the following machines with their working principles:
(i) Electric motor - (a) Heat energy into mechanical energy
(ii) Steam engin...
Boyle’s Law is applicable to gases under which conditions?
The term ‘Isoneph' indicates the lines of equal –