Search SchoolNGR

Sunday, 16 August 2026
Register . Login

Physics Past Questions and Answers

Topic: Simple estimation of errors

Jamb Physics Questions - Simple estimation of errors

Question 16:

The effect of closing the key K in the circuit shown in the figure above would be to?
  • A Increase the current by 0.4A
  • B Reduce the current by 0.4A
  • C Increase the current by 0.6A
  • D Reduce the current by 0.6A
View Answer & Explanation
Question 17:

In an experiment in which molten naphthalene is allowed to cool, the cooling curve i n the figure was obtained. The temperature 80\(^o\)C is known as the
  • A Cooling temperature
  • B Boiling point
  • C Melting point
  • D Vaporization point
View Answer & Explanation
Question 18:

In the figure, the value of R is
  • A 3\(\Omega\)
  • B 6\(\Omega\)
  • C 4\(\Omega\)
  • D 5\(\Omega\)
View Answer & Explanation
Question 19:
A substance has half of 3 min. After 6 min, the count rate was observed to be 400. What was its count rate at zero time?
  • A 1600
  • B 1200
  • C 200
  • D 2400
View Answer & Explanation
Question 20:
Which of the following instruments may be used to measure relative humidity?
  • A Hydrometer
  • B Manometer
  • C Hygrometer
  • D Hypsometer
View Answer & Explanation