Question
A metal plate with a circular hole at the centre is
heated. What will happen to the area of the hole?Solution
Assuming the disc is uniform and isotropic (the same in different directions), the hole will expand in the same ratio as the metal. It is because the thermal expansion equation applies to all lengths associated with the metal, including the circumference of the hole, since the edge of the hole is made out of metal. And if the circumference of the hole expands, so does the diameter.
Which of the following is not a stem modification?
Pungency in radish is due to the presence of
When the leaflets are joined together at a common point at the petiole, the type of leaf is
Manures are categorised into bulky and concentrated organic manure. An example of Concentrated organic manure is
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as
More incidence of fruit cracking in pomegranate takes place in which season?
Which of these green manuring crop is stem nodulating?
The monocotyledonous plants can be distinguished from dicotyledonous plants by:
The gynoecium occupies the highest position while the other parts are situated below it. Which type of flower is that?Â
Which of the following cucurbits is richest in iron content?
