CIE Physics Paper-1: Specimen Questions 1 - 3 of 109
Question number: 1
A man tunes his radio from 95 Hz to 102 Hz. What does this explain about radio?
A man tunes his radio to station broadcasting on from 95 Hz to 102 Hz.
Now from given option, amplitude is the unit less quantity, unit of speed is and unit of wavelength is meter.
Only unit of frequency is Hz. So man turns frequency of station.
Question number: 2
4 divers are there, 2 in sea water and 2 in fresh water. Which diver will face greatest pressure known that oil is denser than sea water?
Pressure in liquid we can define as
Where ρ = Density of liquid
g = Gravitational acceleration
h = Height above the point at which we measure the pressure
In this case density of oil is denser than sea water and height of diver D is more.
Thus on diver D is there the greatest pressure.
Question number: 3
There are 2 thermometers X and Y, one above and other below. After some time, reading on thermometer changes but ice does not melt. Reading of which thermometer will change?
Thermometer Y; Reason: Cool air falls from the ice cube
Thermometer X; Reason: Warm air rises from the ice cube
Thermometer X; Reason: Cool air rises from the ice cube
Thermometer Y; Reason: Warm air falls from the ice cube
Here both thermometer at the same distance through ice cube.
Now, cool air falls from the ice cube. Thermometer X has temperature more than cool air then it not effect on reading. But thermometer Y has temperature less than cool air then it effect on reading.
So, reading on thermometer Y is change