30k
243k
300k
3003k
Correct answer is B
100\(\theta\) .... 875mm
0\(\theta\) ....325mm
\(\theta\) .... 190mm
\(\frac{0 - \theta}{100 - \theta}\) = \(\frac{325 - 190}{875 - 190}\)
\(\theta\) = -25oC
= 243k
30cm
40cm
20cm
2cm
Correct answer is C
Mw displaced = 40g
density = \(\frac{mass}{\text{area x height}}\)
I = \(\frac{40}{2\times h}\)
h = 20cm
i and iii
ii and iii
iii and iv
i and iv
Correct answer is D
No explanation has been provided for this answer.
80J
120J
300J
500J
Correct answer is C
Efficiency = \(\frac{output}{input}\) x 100
40 = \(\frac{20\times10}{input}\) x \(\frac{100}{1}\)
input = 500J
work against friction = input - output
= 500 - 200 = 300J
surface tension of the liquid is reduced
perpendicular distance between the plates is increased
area of the liquid surface in contact with the plates is increased
pressure of the air is decreased
Correct answer is C
No explanation has been provided for this answer.