The size of a carbon block is `1.0xx10 cm xx50 cm`. Find its resistance (i) between the opposite square faces (ii) between the opposite rectangular faces of the block. The resistivity of carbon is `3.5xx10^(-5) Omega cm`.
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Die A has 4 red and 2 white faces, whereas die B has 2 red and 4 white faces. A coins is flipped once. If it shows a head, the game continues by throw
Let R be the event that a red face appears in each of the first n throws. `E_(1):` Die A is used when head has already fallen `E_(2):` Die B...
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A pyramid has four faces, all of them being equilateral triangle of side a. A charge Q is placed at the centre of one of the faces. What is the flux o
Correct Answer - `(Q)/(6epsilon_(0))`
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An isosceles glass prism has one of its faces silvered. A light ray is incident normally on the other face which is identical in size to the silvered
Correct Answer - `mu gt (1)/(sin 72^(@))`
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The sides of a square ABCD are formed of wires, each of resistance r and B is joined to D by a wire of resistance 2r. Find the equivalent resistance o
Correct Answer - i) 2/3r, ii) r, iii) 2/3r
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Charges of `+1.0xx10^(-11)C,-2.0xx10^(-11),+1.0xx10^(-11)C` are placed respectively at the corners B, C and D of a rectangle ABCD. Determine the poten
Correct Answer - 1.65V
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What is the electrostatic potential energy of the charge configuration shown in figure. Take `q_(1)=+1.0xx10^(-8)C,q_(2)=-2.0xx10^(-8)C,q_(3)=+3.0xx10
Correct Answer - `-6.36xx10^(-7)J`
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(i) The base of an open rectangular box is square and its volume is ` 256 cm^(3)`. Find the dimensions of this box if we want to use least material fo
Correct Answer - (i) 8 cm, 8 cm, 4 cm (ii) Length = `80/(pi+4)" metre, Breadth "40/(pi+4)" metre,Radius "40/(pi+4)` metre
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The volume of a closed square based rectangular box is 1000 cubic metre. The cost of constructing the base is 15 paise per square metre and the cost o
Correct Answer - 10 metre, 10 metre, 10 metre
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If `f`, e, and v represent the number of rectangular faces, number of edges and number of vertices repectively of a cuboid, then the values of `f`, e,
Correct Answer - 6, 12 and 8
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The area of the upper face of a rectangular block is 0.5 m × 0.5 m and the lower face is fixed. The height of the block is 1 cm.
Given: A = 0.5 m × 0.5 m = 0.25 m2, h = 1 cm = 10-2m, x = 0.015 mm = 15 × 10-6m n = 4.5 × 1010 N/m2 To find: Strain (θ). Shearing...
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