Lakhmir Singh is a well-known author of science textbooks, particularly for subjects like physics, chemistry, and biology. His books are widely used by students in India and other countries. While Lakhmir Singh's books are comprehensive and cover the essential topics in these subjects, it is not recommended to rely solely on one author or one set of books for your studies.

It is always beneficial to refer to multiple sources, such as other textbooks, reference books, online resources, and classroom notes, to get a well-rounded understanding of the subject. Different authors may have different explanations or examples that can help you grasp concepts better.

Additionally, it can be helpful to discuss concepts with your peers, teachers, or tutors to clarify any doubts and gain different perspectives on the subject matter. Working through practice problems and attempting sample papers from various sources can also aid in reinforcing your knowledge and improving your exam preparation.

So, while Lakhmir Singh's books can be a valuable resource, it is advisable to supplement your studies with other resources to have a more comprehensive understanding of the subjects.