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Physics GK · all questions

Mechanical Physics
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Density of water is

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The body is called perfectly plastic body

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Pressure is a scalar quantity because

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Why do water droplets always take a round shape when dropped onto plane surfaces?

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In which situation the molecular attraction is very strong?

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The force of buoyancy depends on the density and . . . . . . . . of the liquid displaces.

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Which one of the following statement is not correct?

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If two miscible liquids of same volume but different densities ρ1 and ρ2 are mixed, then the density of the mixture is given by

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Assertion (A): An iron ball floats on mercury but gets immersed in water.
Reason (R): The specific gravity of iron is more than that of mercury.

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Two capillary tubes of different diameters are dipped in water. The rise of water is

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If two bubbles of soap of different diameter come in contact with a tube, then what will happen?

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What is the upward pressure generated by an object being placed on a fluid?

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Soap bubble attains spherical shape due to . . . . . . . .

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A needle sinks in water whereas a ship made of iron floats on it because

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How does a blotting paper absorbing ink?

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Consider the figure of a fountain with four holes, given below.
Mechanical Physics mcq question image
Which one of the holes in the fountain will throw the water farthest?

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Match the columns.
Column I Column II
a. Linear strain 1. Change in the shape without changing its volume
b. Volumetric strain 2. Change in length alone
c. Shearing strain 3. Change in volume
d. Young's modulus 4. Ratio of normal stress to longitudinal strain

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A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of . . . . . . . .

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An iron needle floats on the surface of water due to

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When an object sinks, the up thrust of the fluid on the object is:

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