Search SchoolNGR

Sunday, 16 August 2026
Register . Login

Physics Past Questions and Answers

Topic: Solar collector

Jamb Physics Questions - Solar collector

Question 1:
fig above represents the main sequence of energy conversion at kainji dam. what is the efficiency of the system?
  • A Q1/Q2
  • B E/Q1
  • C E/(Q1-Q2)
  • D E/(Q1-Q2)
View Answer & Explanation
Question 2:
A 500W heater is used to heat 0.6kg of water from 25oC to 100oC in t2 seconds. If another 1000W heater is used to heat 0.2kg of water from 10oC to 100oC in t, seconds, find \(\frac {t_1}{t_2}\)
  • A 50
  • B 5
  • C 5/4
  • D 1/5
View Answer & Explanation