General physics- Knowledge test

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General physics- Knowledge test

Question 21 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Of the following properties of a wave, the one that is independent of the other is its
A
amplitude
B
velocity
C
wavelength
D
frequency
Question 22 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
A
0.14 m/s
B
140 m/s
C
1.4 km/s
D
14 m/s
Question 23 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Nuclear sizes are expressed in a unit named
A
Fermi
B
angstrom
C
newton
D
tesla
Question 24 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It takes much longer to cook food in the hills than in the plains, because
A
in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
B
due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil
C
in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
D
in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking
Question 25 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The absorption of ink by blotting paper involves
A
viscosity of ink
B
capillary action phenomenon
C
diffusion of ink through the blotting
D
siphon action
There are 25 questions to complete.