11 Physics Practice Question

Write by Geleswar

FIRST CHAPTER                         [Physics] 11 

  PHYSICAL WORD AND MEASUREMENT

         (UNITS AND MEASUREMENT)

(1) What are the significant figures of following measurement:

(a)5.89cm       (a)38.25kg        (c)3.0089g

(d)0.0059cm   (e)2.39×10⁵kg  (f)3700m        

(f)16.0s           (16.000kg

[ANS].(A)3,(b)4,(c)5,(d)2,(e)3,(f)2,(g)3,(h)5

(2)Express the following results with due regard to significant figure.

(A)3.897+15.2     (b)38.25kg    (c)27.152+3.08

(d)15.2867-9.38  (e)3.952-0.098 (f)12.98×3.2

(g)38.005×0.008 (h)9.58÷3.2      (i)7.925÷0.0059

[ANS](a)19.1,(b)20.0,(c)30.2,(d)5.91,(e)3.9,(f)42,(g)0.3,(h)3.0,(i)1300

(3) A cylinder has a length of 8.9m and a radius of 2.543m. Express its surface area and volume upto the appropriate significant figures.

[ANS] area 180m²,Volume 180m³

(4)The dimension of a block are 5.438m×1.87m. Express its volume in appropriate significant figures.

[ANS]29.8m³