Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Physics
  6. /
  7. 2002
  8. /
  9. Q20
Question 20

Water of mass 120g at 50oC is added to 20og of water at 10oC and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]

  • A.60oC
  • B.40oC
  • C.25oC
  • D.10oC
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
2002
Question no.
#20
Type
Objective
Previous · Q19The silver coating on the inside of a vacuum flask reduces heat loss by Next · Q21 Calculate the energy required to vapourise 50g of water initially at 80 o…

More from this paper

  • Q16A block and tackle system has 6 pulleys. If the efficiency of the machine is…
  • Q17Which of the following actions will improve the efficiency of the pulley system?
  • Q18The ice and steam points of a certain thermometer are -20 o and 100 o…
  • Q22What type of motion does the skin of a 'talking' drum perform when it is struck…
  • Q23A slinky spring fixed at one end is placed horizontally on a table. The free end…
  • Q24A radio wave has a wavelength of 150m. If the velocity of radio waves is free…
See all Physics 2002 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