University:
Cypress College
Course:
PHYS 201 C | College Physics I
Academic year:

2021
Views:

14

Pages:

21
Author:

NikkiP24

Chapter 1: Units and Measurements EXERCISES [PAGES 14-15 Exercises | Q1. | Page 14 Choose the correct option. [L'M'T'] is the dimensional formula for 1. Velocity 2. Acceleration 3. Force 4. Work SOLUTION [L'M'T'] is the dimensional formula for force Exercises | Q1. (0)| Page 14 Choose the correct option. The error in measuring the sides of a rectangle is 1%. The error in the measurement of its area is 19% 1 % 2 2% None of the above SOLUTION The error in measuring the sides of a rectangle is 1%. The error in the measurement of its area is 2% Explanation: A=1xb ΔΑ ΔΙ + b -1%+1%=2% A Exercises | Q1. | Page 14 Choose the correct option. A light year is a unit of 1. Time 2. Mass 3. Distance 4. Luminosity SOLUTION A light year is a unit of distance. Exercises | Q1. (iv) | Page 14 Choose the correct option. Dimensions of kinetic energy are the same as that of 1. Force 2. Acceleration 3. Work 4. Pressure SOLUTION Dimensions of kinetic energy are the same as that of work. Exercises | Q1. (v) | Page 14 Choose the correct option. Which of the following is not a fundamental unit? 1. cm 2. kg 3. centigrade 4. volt SOLUTION volt Exercises ] Q 2.0 | Page 14 Answer the following question. Star A is farther than Star B. Which star will have a large parallax angle? 1. 'b' is constant for the two stars 1 2. As star A is farther i.e. DA > DB Hence, star B will have a larger parallax angle than star A Exercises | Q2.() | Page 14 Answer the following question. What are the dimensions of the quantity acceleration due to gravity? being the length, and g the