Download App

PART - 2 CH - 9 Mechanical Properties of Fluids — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsPART - 2 CH - 9 Mechanical Properties of Fluids2 Marks
Question
To calm the sea waves, oil is put on them. Why?
✓

Answer

When oil is poured, the air spreads the oil on the surface of water in the direction of air flow to a large distance. The surface tension of water is more than the surface tension of oil covered water. So the water without oil pulls the water with oil in the opposite direction of air, due to which the sea waves calm down.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from PART - 2 CH - 9 Mechanical Properties of Fluids→PART - 2 CH - 9 Mechanical Properties of Fluids — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Can virtual image be formed on the retina in a seeing process?
→
The Young’s modulus for steel is much more than that for rubber. For the same longitudinal strain, which one will have greater tensile stress?
→
The coil of a moving-coil galvanometer keeps on oscillating for a long time if it is deflected and released. If the ends of the coil are connected together, the oscillation stops at once. Explain
→
For S.H.M. why is a restoring force necessary ?
→
A piano wire weighing 6.00g and having a length of, 90.0cm emits a fundamental frequency corresponding to the "Middle C" (v = 261.63Hz). Find the tension in the wire.
→
A large force is needed to normally separate two glass plates having a thin layer of water between them. Why?
→
A wire of length L and radius r is clamped rigidly at one end. When the other end of the wire is pulled by a force f, its length increases by I. Another wire of the same material of length 2L and radius 2r, is pulled by a force 2f. Find the increase in length of this wire.
→
Air gets thinner as we go up in the atmosphere. Will the velocity of sound change?
→
When rubber sheets are used in a shock absorber, what happens to the energy of vibration?
→
Whether the diffraction effects from a slit will be more clearly visible or less clearly, if the slit-width is increased?
→