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## MCQ (More than One Correct Answer)

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Two wires A and B of same length are made of same material. Load (F) vs. elongation (x) graph for these two wires is ...
WB JEE 2022

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27 drops of mercury coalesce to form a bigger drop. What is the relative increase in surface energy?
WB JEE 2022
Under isothermal conditions, two soap bubbles of radii a and b coalesce to form a single bubble of radius c. If the exte...
WB JEE 2021
Two solid spheres S1 and S2 of same uniform density fall from rest under gravity in a viscous medium and after sometime,...
WB JEE 2021
A body of density 1.2 $$\times$$ 103 kg/m3 is dropped from rest from a height 1 m into a liquid to density 2.4 $$\times... WB JEE 2021 Which of the following diagrams correctly shows the relation between the terminal velocity vT of a spherical body fallin... WB JEE 2020 A steel and a brass wire, each of length 50 cm and cross-sectional area 0.005 cm2 hang from a ceiling and are 15 cm apar... WB JEE 2020 A small spherical body of radius r and density$$\rho $$moves with the terminal velocity v in a fluid of coefficient of... WB JEE 2019 A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by 1%. If the ... WB JEE 2019 What will be the approximate terminal velocity of a rain drop of diameter$${1.8 \times {{10}^{ - 3}}}$$m, when density... WB JEE 2018 The stress along the length of a rod (with rectangular cross-section) is 1% of the Young's modulus of its material. What... WB JEE 2018 A solid rectangular sheet has two different coefficients of linear expansion$$\alpha$$1 and$$\alpha2 along its lengt...
WB JEE 2017
A liquid of bulk modulus k is compressed by applying an external pressure such that its density increases by 0.01%. The ...
WB JEE 2017
A uniform capillary tube of length l and inner radius r with its upper end sealed is submerged vertically into water. Th...
WB JEE 2017
A piece of wood is floating in water. When the temperature of water rises, the apparent weight of the wood will
WB JEE 2008
A beaker of radius 15 cm is filled with a liquid of surface tension 0.075 N/m. Force across an imaginary diameter on the...
WB JEE 2008
A wire is stretched under a force. If the wire suddenly snaps the temperature of the wire
WB JEE 2008
Which of the following substances has the highest elasticity?
WB JEE 2008

## Subjective

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A wire of length 5 m is stretched by 1 mm by a force of 1 N. What is the value of energy stored in the wire?
WB JEE 2008

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