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JEE Main Mechanical Properties of Solids and Fluids — practice questions — page 3

Explore 127 free Mechanical Properties of Solids and Fluids questions in JEE Main Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Mechanical Properties of Solids and Fluids questions and exercises with answers

Showing questions 61–90 of 127.

Wets or does not wetRead the answer and worked solution →Match each case to what happensRead the answer and worked solution →Quick picks on surface tensionRead the answer and worked solution →Small or large angle of contactRead the answer and worked solution →Why a free drop turns sphericalRead the answer and worked solution →Fill the gaps on surface tensionRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →A needle pierces skin but a spoon's back pressed with the same force does not. The needle wins because of its:Read the answer and worked solution →A fluid at rest pushes on a submerged object. The force is always:Read the answer and worked solution →The SI unit of pressure honours the French scientist:Read the answer and worked solution →The excess pressure at a depth over atmospheric pressure is called:Read the answer and worked solution →Three differently shaped vessels joined at the bottom fill to the same level. This shows that pressure depends on:Read the answer and worked solution →At 1 km below the sea the pressure rises by about:Read the answer and worked solution →Torricelli's barometer uses a tube of mercury inverted into a trough. At sea level the column stands about:Read the answer and worked solution →A pressure of 1 mm of mercury is called a:Read the answer and worked solution →Pressure applied to an enclosed fluid is transmitted undiminished in all directions. This is used in:Read the answer and worked solution →In a hydraulic lift a small force on a small piston lifts a car on a large piston. The force gain is the:Read the answer and worked solution →The upward force a fluid exerts on a submerged body is the:Read the answer and worked solution →Archimedes' principle says the upward force equals the weight of the:Read the answer and worked solution →A stone is denser than water, so in water it:Read the answer and worked solution →The path of a fluid particle in steady flow is a:Read the answer and worked solution →The equation of continuity, Av = constant, expresses conservation of:Read the answer and worked solution →Where a pipe narrows and streamlines crowd together, the fluid speed:Read the answer and worked solution →Above a limiting speed called the critical speed, flow becomes:Read the answer and worked solution →Water leaves a hole in an open tank at the speed of a freely falling body. This is:Read the answer and worked solution →Plaque narrows an artery, blood speeds up there and pressure drops. The artery may:Read the answer and worked solution →Honey needs a bigger force than oil to slide a plate at the same speed. Honey is more:Read the answer and worked solution →Surface tension is a property of:Read the answer and worked solution →A wet paint brush forms a fine tip when lifted from water. This is due to:Read the answer and worked solution →Catch the Bernoulli devicesRead the answer and worked solution →

Worked practice questions

Wets or does not wet

Read exercise and reference answers
Left
Wets
Items
  1. Item
    Water on plastic
    Answer
    Wets
  2. Item
    Water on glass
    Answer
    Wets
  3. Item
    Oil in a wick
    Answer
    Wets
  4. Item
    Water on a leaf
    Answer
    Does not
  5. Item
    Mercury on glass
    Answer
    Does not
  6. Item
    Water on wax
    Answer
    Does not
Right
Does not
Instructions
Swipe left if the liquid wets it, right if it does not.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._

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Match each case to what happens

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Matching pairs
  1. Left
    Water on a leaf
    Right
    Gathers into droplets
  2. Left
    Water on plastic
    Right
    Spreads over the plate
  3. Left
    Oil in a wick
    Right
    Climbs against gravity
Instructions
Tap a case, then tap what the liquid does.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._

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Quick picks on surface tension

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Questions
  1. Question
    Surface tension is a force per unit:
    Choices
    1. Length
    2. Volume
    3. Weight
    Correct choice
    Length
  2. Question
    It equals surface energy per unit:
    Choices
    1. Mass
    2. Area
    3. Time
    Correct choice
    Area
  3. Question
    Water on a lotus leaf will:
    Choices
    1. Spread flat
    2. Soak right in
    3. Form droplets
    Correct choice
    Form droplets
  4. Question
    A free drop takes the shape of a:
    Choices
    1. Sphere
    2. Cube
    3. Disc
    Correct choice
    Sphere
  5. Question
    Detergents act as agents that help liquids:
    Choices
    1. Freeze
    2. Wet
    3. Boil
    Correct choice
    Wet
Instructions
Tap the correct answer before the round moves on.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._

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