Question: Concepts of Physics was by which Indian experimental physicist?
Context: Concepts of Physics is a calculus-based physics textbook by H. C. Verma.  The book was first published in 1992.  It is published as a two-volume set, with each volume roughly covering the physics syllabus of class XI and class XII respectively.  The book is extensively popular amongst students preparing for competitive exams, especially the Joint Entrance Examination. Chien-Shiung Wu (; May 31, 1912 – February 16, 1997) was a Chinese-American experimental physicist who made significant contributions in the field of nuclear physics.  Wu worked on the Manhattan Project, where she helped develop the process for separating uranium metal into uranium-235 and uranium-238 isotopes by gaseous diffusion.  She is best known for conducting the Wu experiment, which contradicted the hypothetical law of conservation of parity.  This discovery resulted in her colleagues Tsung-Dao Lee and Chen-Ning Yang winning the 1957 Nobel Prize in physics, and also earned Wu the inaugural Wolf Prize in Physics a mere two decades later in 1978.  Her expertise in experimental physics evoked comparisons to Marie Curie.  Her nicknames include "the First Lady of Physics", "the Chinese Madame Curie", and the "Queen of Nuclear Research". Harish Chandra Verma (born 3 April 1952) is an Indian experimental physicist and a retired professor at the Indian Institute of Technology Kanpur since 1994.  His field of research is nuclear physics. Eshel Ben-Jacob (full name Eshel Refael Ben-Jacob Breslav; Hebrew: אשל רפאל בן-יעקב‎ ‎ 13 April 1952 – 5 June 2015), was a theoretical and experimental physicist at Tel Aviv University, holder of the Maguy-Glass Chair in Physics of Complex Systems, and Fellow of the Center for Theoretical Biological Physics (CTBP) at Rice University.  During the 1980s he became an international leader in the theory of self-organization and pattern formation in open systems, and later extended this work to adaptive complex systems and biocomplexity.  His specialization in self-organization of complex systems yielded the breakthrough of solving the long-standing (since Kepler) snowflake problem.  In the late 1980s, he turned to study of bacterial self-organization, believing that bacteria hold the key to understanding the larger biological systems.  He developed new pattern forming bacteria species, became a pioneer in the study of bacterial intelligence and social behaviors of bacteria, and was an influential figure in establishing the now rapidly evolving physics of living systems (biological physics and physical biology) disciplines.  He was an adviser to the Microbes Mind Forum. Rappal Sangameswara Iyer Krishnan (23 September 1911 – 2 October 1999) was an Indian experimental physicist and scientist.  He was the Head of the department of Physics at the Indian Institute of Science and the vice chancellor of the University of Kerala.  He is known for his pioneering researches on colloid optics and a discovery which is now known as "Krishnan Effect".  He was a Fellow of the Indian Academy of Sciences, Indian National Science Academy and the Institute of Physics, London and a recipient of the C. V. Raman Prize. Johannes Wilhelm Heinrich Juilfs, also known by the alias Mathias Jules, (15 December 1911 – 1995) was a German theoretical and experimental physicist.  He was a member of the "Sturmabteilung" (SA) and then, in 1933, of the "Schutzstaffel" (SS).  Prior to World War II, he was one of three SS staff physicists who investigated the physicist Werner Heisenberg during the Heisenberg Affair, instigated, in part, by the ideological "deutsche Physik" (German physics) movement.  During the war, he worked as a theoretical physics assistant at the Kaiser Wilhelm Institute for Physics.  During the denazification process after World War II, he was banned from working as a civil servant in academia.  For a few years, he worked as a school principal, and then he took a job as a physicist in the textile industry.  With the help of Heisenberg and the Minister of Lower Saxony, he was able to become a full professor at the University of Hanover. Herbert Arthur Stuart (27 March 1899, Zurich – 8 April 1974, Hanover) was a German experimental physicist who made contributions in molecular physics research.  During World War II, he was director of the experimental physics department at the "Technische Hochschule Dresden".  From 1955, he was the head of the high polymer physics laboratory at the University of Mainz. Julius Ashkin (August 23, 1920 – June 4, 1982) was a leader in experimental and theoretical physics known for furthering the evolution of particle physics from nuclear physics.  As a theoretical physicist he made contributions in the fields of statistical mechanics, solid state physics, nuclear physics, and elementary particle physics.  As an experimental physicist his main contributions concerned the passage of certain particles (pi-mesons, or pions) through solid matter and their subsequent decay.  He was recognized for the quality of his research and teaching. Robert Benjamin Leighton ( ; September 10, 1919 – March 9, 1997) was a prominent American experimental physicist who spent his professional career at the California Institute of Technology (Caltech).  His work over the years spanned solid state physics, cosmic ray physics, the beginnings of modern particle physics, solar physics, the planets, infrared astronomy, and millimeter- and submillimeter-wave astronomy.  In the latter four fields, his pioneering work opened up entirely new areas of research that subsequently developed into vigorous scientific communities. Robert Graham Hamish Robertson (born 3 October 1943 in Ottawa) is a Canadian experimental physicist.  He is the "Boeing Distinguished Professor" for physics at the University of Washington and director of the University of Washington's Center for Experimental Nuclear Physics and Astrophysics.  His specialty is neutrino physics.
Answer: Harish Chandra Verma