Question
Which plough helps cutting of creeping or spreading
grass and inversion?Solution
A disc plough can be forced to penetrate into the soil which is too hard and dry for working with a mouldboard plough. It works well in sticky soils in which a mouldboard plough does not scour.
A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?
The apparatus used in the refrigeration is
The loudness of the sound depends uponÂ
Adhesive force is the force of
Which Vitamin is soluble in water?
The hair of shaving brush clings together when removed from water due to –
Mercalli scale is the instrument used for measuring the intensity of ___________.
A storm is predicted if atmospheric pressure:
S.I unit of Luminous Intensity is
‘Therm' is the unit of –