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WBCS Preliminary Examination 2015 — General Studies · Question 85 of 200

Q85
General SciencePhysics
The solar cooker works on the same principle as
  1. a.Bolometer
  2. b.Pyrometer
  3. c.Greenhouse
  4. d.Galvanometer

Answer: (C) Greenhouse

A solar cooker traps solar radiation within an insulated box (or under glass), preventing heat from escaping — exactly the same principle as the greenhouse effect, where glass or transparent covers allow solar radiation in but block outgoing infrared heat. A bolometer measures radiation intensity; a pyrometer measures high temperatures; a galvanometer measures current.

Q84 Whole paperQ86
The solar cooker works on the same principle as — WBCS Preliminary Examination 2015 Q85 | Prostuti360°