Related Questions

The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.
A Equal to
B Less than
C More than
D None of these
A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity of water drained away, how many liters of water were drained away ?
A 2
B 3
C 9
D 6
এ সমস্যা থেকে মুক্তির উপায় হলো—i. CPU ঠাণ্ডা করাii. heat sink পরিষ্কার করাiii. heat sink এর সাথে র্যাম যুক্ত করানিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called
A Surface tension
B Compressibility
C Capillarity
D Viscosity
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
A Pascal’s law
B Archimedes’s principle
C Principle of flotation
D Bernoulli’s theorem
When a body is placed over a liquid, it will float if
A Gravitational force is equal to the up-thrust of the liquid
B Gravitational force is less than the up-thrust of the liquid
C Gravitational force is more than the up-thrust of the liquid
D None of the above
When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler.
A Law of conservation of energy
B Newton's third law of motion
C Law of Inertia
D Law of conservation of momentum
When a steel ball is placed on the surface of mercury, it does not sink because
A of the surface tension of mercury
B mercury is a semisolid
C of the high viscosity of mercury
D the density of mercury is greater than that of steel
'I sat down' and ' Tears ran down her face'. The word 'down' is used in these sentences as-
A Verb -adverb
B Adverb-preposition
C Adverb -verb
D Preposition-adverb

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