Q. A student recorded the mass of dry raisins as 2.5g and the mass of raisins after soaking in water as 4 g. While performing the above experiment. The percentage of water absorbed by raisin is:
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Q. What is radioactivity and what are alpha particles? The thickness of the glass slab and the optical density of the glass slab affect the lateral displacement of the emergent ray. the total mass of nucleus is lesser than the total mass of protons and neutrons when they are not bound in the nucleus that means they are free. The difference between mass of free nucleons (Proton + Neutrons) and mass of nucleus is called mass defect. This lost mass is converted into energy known as Binding Energy. We know that there are basically four different type of shells, each of which has different capacity to hold the maximum number of electrons. |