Conceptual Questions | Physics 9th | Chapter 1 Physical Quantities & Measurements | National Book
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Загружено: 2022-09-23
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2. Give short response to the following questions
(i) “Physics has made our lives comfortable.” Justify this statement.
(ii) What base quantities are involved in these derived physical quantities; force, pressure, power and charge.
(iii) Show that prefix micro is thousand times greater than prefix nano.
(iv) Screw gauge can give more precise length than vernier calipers. Briefly explain why?
(v) Differentiate between mechanical stop watch and digital stop watch.
(vi) How measuring cylinder is used to measure volume of an irregular shaped stone?
(vii) What precaution should be kept in mind while taking measurement using measuring cylinder?
(viii) Why do we need to consider significant digits in measurements?
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