Mechanical Physics — Part 2 MCQs with Explanations

Equal to the weight of the water displaced by the object is the correct answer to “What will be the buoyancy force exerted by the water”. This question is standard in competitive examination syllabi for Mechanical Physics.

ML-1T-2 is the correct answer to “Which of the following is dimension of pressure-”. This question is standard in competitive examination syllabi for Mechanical Physics.

Iron nail is the correct answer to “Which of the following substance density is greater than the density of water”. This question is standard in competitive examination syllabi for Mechanical Physics.

The sea water is salty is the correct answer to “Why it is easier to swim in the sea than in a river”. This question is standard in competitive examination syllabi for Mechanical Physics.

Bernoulli's Theorem is the correct answer to “The working of venturimeter is based on”. This question is standard in competitive examination syllabi for Mechanical Physics.

is same in all directions is the correct answer to “The pressure in a liquid at a given depth below the surface”. This question is standard in competitive examination syllabi for Mechanical Physics.

Decreases is the correct answer to “With the rise of temperature, the viscosity of liquid”. This question is standard in competitive examination syllabi for Mechanical Physics.

More is the correct answer to “If the area is small for a given force, the pressure will be-”. This question is standard in competitive examination syllabi for Mechanical Physics.

Surface tension of oil is less than water is the correct answer to “Oil spreads on water surface because”. This question is standard in competitive examination syllabi for Mechanical Physics.

molecules of same substances is the correct answer to “Cohesive force is experienced between”. This question is standard in competitive examination syllabi for Mechanical Physics.

Increases is the correct answer to “As the depth increases from the free surface of a fluid, the pressure exerted by the liquid will be-”. This question is standard in competitive examination syllabi for Mechanical Physics.

Technetium is the correct answer to “Which of the following elements was first produced artificially”. This question is standard in competitive examination syllabi for Mechanical Physics.

Pressure is the correct answer to “What is the thrust per unit area called”. This question is standard in competitive examination syllabi for Mechanical Physics.

falls is the correct answer to “A boat full of iron nails is floating on water in a lake. When the iron nails are removed, the water level”. This question is standard in competitive examination syllabi for Mechanical Physics.

Steel is the correct answer to “Which one of the following substances possesses the highest elasticity”. This question is standard in competitive examination syllabi for Mechanical Physics.

Buoyancy force is the correct answer to “What is the force exerted by water in upwards direction”. This question is standard in competitive examination syllabi for Mechanical Physics.

Its density is less than the density of water is the correct answer to “Kerosene oil floats on water because”. This question is standard in competitive examination syllabi for Mechanical Physics.

none of these is the correct answer to “If the depth of water in a dam is 'h' and 'A' is the transverse area of dam and 't' is the thickness of the dam. How, the pressure of dam wall depend on”. This question is standard in competitive examination syllabi for Mechanical Physics.

Both A and R are true and R is the correct explanation of A is the correct answer to “Assertion (A) The solids are more elastic and gases are least elastic. Reason (R) It is so because for the given stress applied the gases are more compressible than that of solids.”. This question is standard in competitive examination syllabi for Mechanical Physics.

Archimedes is the correct answer to “Which of the following physicists explained the existence of Buoyant force”. This question is standard in competitive examination syllabi for Mechanical Physics.

10.8 is the correct answer to “The density of silver is 10.8 × 10 3 kgm -3 and the density of water is 10 3 kgm -3 . What is the relative density of silver”. This question is standard in competitive examination syllabi for Mechanical Physics.

decreases is the correct answer to “With the rise of temperature, the surface tension of a liquid”. This question is standard in competitive examination syllabi for Mechanical Physics.

Change in their momentum by hitting the wall is the correct answer to “Virtually the force exerted on a vessel wall by a gas molecules.”. This question is standard in competitive examination syllabi for Mechanical Physics.

Remains the same is the correct answer to “An ice cube is floating in a glass of water. What happens to the water level when the ice melts”. This question is standard in competitive examination syllabi for Mechanical Physics.

Increasing is the correct answer to “When a coil spring is compressed, the work is done on the spring. What is the elastic potential energy”. This question is standard in competitive examination syllabi for Mechanical Physics.

the ratio of normal stress to the volumetric strain within the elastic limit is the correct answer to “Bulk modulus of elasticity is defined as”. This question is standard in competitive examination syllabi for Mechanical Physics.

Designing of aeroplane wings is the correct answer to “Which of the following is not based on the Archimedes Principle”. This question is standard in competitive examination syllabi for Mechanical Physics.

No unit is the correct answer to “In CGS system, the unit of strain is:”. This question is standard in competitive examination syllabi for Mechanical Physics.

Gets reduced is the correct answer to “As the depth decreases from the free surface of a fluid, the pressure exerted by the liquid will be-”. This question is standard in competitive examination syllabi for Mechanical Physics.

All of the above is the correct answer to “Pressure at any point of a liquid increases with”. This question is standard in competitive examination syllabi for Mechanical Physics.

surface tension is the correct answer to “Soaps clean surfaces on the principle of based on”. This question is standard in competitive examination syllabi for Mechanical Physics.

zero is the correct answer to “The modulus of rigidity of a liquid is”. This question is standard in competitive examination syllabi for Mechanical Physics.

Surface tension is the correct answer to “Due to which property the falling drop of water is spherical-”. This question is standard in competitive examination syllabi for Mechanical Physics.

Friction is the correct answer to “The most important property of nanomaterial is”. This question is standard in competitive examination syllabi for Mechanical Physics.

Weight of the fluid displaced by the body is the correct answer to “According to Archimedes principle, the upward force experienced by a body immersed in a fluid is equal to which of the following”. This question is standard in competitive examination syllabi for Mechanical Physics.

coincides with the centroid of the volume of fluid displaced is the correct answer to “Center of buoyancy always-”. This question is standard in competitive examination syllabi for Mechanical Physics.

1, 2 and 3 is the correct answer to “Consider the following statements. 1. Surface tension of liquid depends on length but not on the area, like the elastic property. 2. SI unit of surface tension is N/m. 3. Surface tension is a scalar quantity because it has no specific direction for a given liquid. Which of the statement(s) given above is/are correct”. This question is standard in competitive examination syllabi for Mechanical Physics.

Density is the correct answer to “The clouds float in the atmosphere because of their low”. This question is standard in competitive examination syllabi for Mechanical Physics.

gravitational attraction of the earth for the atmosphere is the correct answer to “The pressure of the earth's atmosphere at sea level is due to the”. This question is standard in competitive examination syllabi for Mechanical Physics.

It rises a little is the correct answer to “When a ship enters a sea from a river, what happens”. This question is standard in competitive examination syllabi for Mechanical Physics.