The power of combination of two lenses is P = P₁ + P₂, Where P₁ is the power of the convex lens of focal length 20 cm & P₂ is power of concave lens of focal length of 25 cm.

The food prepared in the plant (which are called autotrophs) by the process of photosynthesis is glucose that gets stored in various plant parts in the form of starch.

(1)Valve prevent backside flow of the blood. (2)You must know that valves ensure that blood does not flow backwards when the atria or ventricles contract. (3)Similarly, atrioventricular (AV) valve between atrium and ventricle directs the flow of blood and prevents ...

As we know that when the exhaled air rich in carbon dioxide is blown from mouth into test tube. The lime water turns milky on passing CO₂ gas into it due to formation of insoluble calcium carbonate (CaCO3). As it ...

Silver and mercury are less reactive than copper and as copper will displace those metals from its salt solution which are less reactive than it.