Chapter-wise Test: Unit 01-Physical Quantities and Measurement Name: __________ Roll No: ___________ Total Time: 40 min Total Marks: [ /25] Objective Section Marks: [ /06] Q.1 Encircle the correct option i.e., A/B/C/D. All parts carry equal marks. i. 1 nm = _______. A. 10−9 m B. 10−2 m C. 10−6 m D. 10−3 m ii. The unit of electric charge is: A. Ampere B. Joule C. Coulomb D. Volt iii. Amount of a substance in terms of numbers is measured in: A. Kilograms B. Gram C. Newton D. Mole iv. kgm−3 is the unit for: A. Pressure B. Density C. Charge D. Volume v. An interval of 200 μs is equivalent to: A. 0.02 s B. 0.2 s C. 2 × 10−6 s D. 2 × 10−4 s vi. A car is made on the principles of: A. Mechanics B. Heat C. Atomic physics D. Thermodynamics PART-I-Short Question(s) Marks: [ /09] Q.2 Attempt the following questions. i. What are base units? Give an example. (03) ii. Define the following branches of physics: i. mechanics ii. nuclear physics (03) iii. Why is the use of zero error necessary in a measuring instrument? (03) PART-II-Subjective Section Marks: [ /10] Attempt any ONE question. Q.3 (a) Describe the construction and use for measurement of a screw gauge. (06) (b) A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5 mm. What is its least count? (04) Q.4 (a) Define significant figures and write its rules to consider zero as significant figure. (06) (b) How can you find the mass of a small stone by a physical balance? (04)
Chapter-wise Test: Unit 01-Physical Quantities and Measurement Solution for Objective type of EOU test *Note: Consult the textbook for answers. Objective Section Marks: [ /06] i. A ii. C iii. D iv. B v. D vi. A