Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Physics
  6. /
  7. 2014
  8. /
  9. Q21
Question 21

A quantity of water at 20oC is mixed with another quantity of water at 70oC. The final steady temperature of the mixture is 40oC. Determine the ratio of the mass of the cold water to that of the hot water

  • A.7:2
  • B.3:2
  • C.2:5
  • D.1:2
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
2014
Question no.
#21
Type
Objective
Previous · Q20A body of mass M kg rests on a plane inclined at an angle \(\theta\) to the… Next · Q22 The mass of an empty density bottle is 30g. When filled with a liquid, the mass…

More from this paper

  • Q17The temperature at which the water vapour in the air saturates the air and…
  • Q18The change of state from solid to liquid occurs
  • Q19which of the following types of thermometers can be used to measure a range of…
  • Q23a ca travelling at 30m -1 overcomes a frictional resistance of 100N while…
  • Q24The quality of a note depends on its
  • Q25A transverse wave can be distinguished from a longitudinal wave by
See all Physics 2014 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy