0.600N
0.360N
0.240N
0.180N
Correct answer is C
Rd = \(\frac{\text{upthrust in oil}}{\text{upthrust in }H_2O}\)
thus; 0.875 = \(\frac{0.21}{\text{upthrust in }H_2O}\)
upthrust in H2O = 0.24N
1.3 x 107Nm-2
1.4 x 106Nm-2
1.4 x 105Nm-2
1.0 x 10 5Nm-2
Correct answer is B
Pressure = heg = 1000 x 10 x 10 = 105Nm-2
Total pressure = (1.3 x 106) + (1 x 105)
= 1.4 x 106Nm-2
i, ii, iii only
i, ii, iv only
i, iii, iv only
ii, iii, iv only
Correct answer is B
No explanation has been provided for this answer.
5 x 106
5 x 102
2 x 10-3
2 x 10-7
Correct answer is C
Strain = \(\frac{extension}{\text{original length}}\)
\(\frac{2 {\times} 10^{-5}}{0.01}\)
= 2 x 10-3
20N
25N
50N
80N
Correct answer is B
Efficiency = \(\frac{\text{work done by hand}}{\text{work done by effort}}\)
80 = \(\frac{100{\times 8}}{E {\times} 40}\) x \(\frac{100}{1}\)
E = 25N