From the diagram above, the measuring accuracy of the micrometer screw gauge is
4.78mm
4.16mm
4.66mm
4.70mm
Correct answer is B
No explanation has been provided for this answer.
In the diagram above, the neutral point is at
R
X
S
P
Correct answer is B
No explanation has been provided for this answer.
C
D
B
A
Correct answer is C
See the velocity-time graph.
10cm
20cm
25cm
15cm
Correct answer is D
M = \(\frac{v}{u}\) = 3 = \(\frac{v}{30}\). V = 30m
\(\frac{1}{u}\) + \(\frac{1}{v}\) = \(\frac{1}{f}\) = \(\frac{1}{10}\) - \(\frac{1}{30}\) = \(\frac{1}{f}\)
\(\frac{3 - 1}{30}\) = \(\frac{1}{f}
f = \(\frac{30}{2}\) = 15cm
Boiling occurs when the vapour pressure of a liquid is
At the evaporation point
Less than the atmospheric pressure
Greater than the atmospheric pressure
Equal to the atmospheric pressure
Correct answer is D
No explanation has been provided for this answer.
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