Class 10 Science

Solutions of Questions on Page Number : 200 Q1 :What does an electric circuit mean? Answer : An electric circuit consists of electric devices, switching devices, source of electricity, etc. that are connected by conducting wires. Q2 :Define the unit of current. Answer : The unit of electric current is ampere (A). 1 A is … Read more

Question : Solutions of Questions on Page Number : 190 Q1 :What is meant by power of accommodation of the eye? Answer : When the ciliary muscles are relaxed, the eye lens becomes thin, the focal length increases, and the distant objects are clearly visible to the eyes. To see the nearby objects clearly, the … Read more

Question : Solutions of Questions on Page Number : 168 Q1 :Define the principal focus of a concave mirror. Answer : Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal … Read more

Question : Solutions of Questions on Page Number : 143 Q1 :If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier? Answer : In asexual reproduction, the reproducing cells produce a … Read more

Question : Solutions of Questions on Page Number : 128 Q1 :What is the importance of DNA copying in reproduction? Answer : DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell. The DNA is the information site for making proteins and each specific type … Read more

Question : Solutions of Questions on Page Number : 119 Q1 :What is the difference between a reflex action and walking? Answer : A reflex action is a rapid, automatic response to a stimulus. It does not involve any thinking. For example, we close our eyes immediately when the bright light is focused. Walking, on … Read more