Q1 - State whether True or False.

Last updated at September 16, 2026 by

  • 📋 Revise, Reflect, Refine, Q1 (Page 136)
    State whether True or False.
    View answer Hide answer
    Answer
    Statement True/False Reason
    (i) Work is said to be done when a force is applied, even if the object does not move. False Work needs BOTH force and displacement. No displacement, no work.
    (ii) Lifting a bucket vertically upward results in positive work done on the bucket. True Our force (up) and displacement (up) are in the same direction.
    (iii) The SI unit for both work and energy is joule (J). True Energy is measured by capacity to do work — same unit.
    (iv) A motionless stretched rubber band has kinetic energy. False It is motionless — no kinetic energy. It has POTENTIAL energy (due to deformation).
    (v) Energy can change from one form to another. True Example — electrical to light in a bulb.
Remove Ads
Teachoo · Class 9 Explore Class 9
CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

For an uninterrupted learning experience, students can use Teachoo Black to remove ads and focus better.