1,000 identical drops of oil of density 500kgm-3 have a total mass of 5 x 10-4kg. One of the drops forms a thin film of area 0.5m2 on water. The thickness of the film is
Mass of one oil = \(\frac{5 \times 10^{-4}}{1000}\)
= 5 x 10\(^{-7}\)kg
Density = \(\frac{\text {mass}}{\text{area x thickness}}\)
500 = \(\frac{5 \times 10^{-7}}{\text{0.5 x thickness}}\)
thickness = 2 x 10\(^{-9}\)m
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}