9702/13 Physics May Jun 2024 Online Test | Cambridge AS & A Level Grade MCQ
CIE
AS & A Level
Physics (9702)
شهریور
2024
مشاهده نمونه سوال
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
75 دقیقه

پیش نمایش صفحه اول فایل
In many old-style filament lamps, as much as 93 J of energy is emitted as thermal energy for every 7 J of energy emitted as light.
What is the efficiency of the lamp, as the percentage of electrical energy converted to light energy?