IGCSE Physics Paper-1: Specimen Questions with Answers 77 - 79 of 149
Question 77
Answer
c.Explanation
The given figure shows the measuring cylinder which measure volume of the liquid. And the scale shown in figure is in mm, so volume of liquid measure by this cylinder is in mm3
Question 78
Question MCQ▾
A radio broadcasting shows 200 m. What does 200 m stand for?
Choices
Choice (4) | |
---|---|
a. | its speed |
b. | its wavelength |
c. | its frequency |
d. | its amplitude |
Answer
b.Explanation
Here a woman turns her radio to a station broadcasting on 200 m.
Frequency means one complete revolution per unit time and unit of frequency is Hz or 1/s, amplitude is unit less and unit of speed is m/s.
Only unit of wavelength is meter. Thus woman turns wavelength of station.
Question 79
Question MCQ▾
Thumb is placed on bicycle outlet. If air is pulled in what change will occur to pressure and volume?
What happens to the pressure and to the volume of the trapped air as the pump handle is pulled in?
Choices
Choice (4) | |
---|---|
a. | Pressure increases, volume remains the same |
b. | Pressure increases, volume decreases |
c. | Pressure decreases, volume remains the same |
d. | Pressure decreases, volume decreases |
Answer
d.Explanation
As we remove pressure then volume is expand
In above case if pump handle is pulled then pressure is relish. So, pressure is decrease and volume is increase.