Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
coupling device
cable
ferrule
connector housing
Correct answer is A
Fiber optic couplers are used to split the input signals into two or more outputs, they are called splitters in this case.
On the other hand, some types of couplers can be used to combine two or more inputs into one single output, they are called combiners in this case.
In the formation of sea breeze, wind blows from?
sky to land
sea to sky
land to sea
sea to land
Correct answer is D
A sea breeze describes a wind that blows from the ocean inland towards land.
This breeze occurs most often in the spring and summer months because of the greater temperature differences between the ocean and nearby land, particularly in the afternoon when the land is at maximum heating from the sun.
Which of these is a second-class lever?
sugar tongs
claw hammer
plier
wheelbarrow
Correct answer is D
Examples of first class levers are pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance.
A wheelbarrow, a bottle opener, and an oar are examples of second class levers
Water is not a good thermometric liquid because it?
expands unevenly between 0 ºC and 4 ºC
maintains fixed density
has low freezing point
wets glass
Correct answer is D
Water is most anomalous at low temperatures, with a remarkable density maximum at 4°C.
water is not used as a thermometric liquid because it has low thermal expansivity, high specific capacity, high vapor pressure and wets glass.
0.262 m
0.664 m
0.819 m
0.455 m
Correct answer is D
pressure = p, depth/height = h, density = d, gravity = g
p = hdg
\(\frac{p}{dg} = h\)
\(\frac{9100}{10 * 2000} = h\)
0.455m