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 of electric field emerging from any one of the other three faces of the pyramid?
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There are two die A and B both having six faces. Die A has three faces marked with 1, two faces marked with 2, and one face marked with 3. Die B has o
Correct Answer - C x can be 2, 3, 4, 5, 6. The number of ways in which sum of 2, 3, 4, 5, 6 can occur is given by the...
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There are two die A and B both having six faces. Die A has three faces marked with 1, two faces marked with 2, and one face marked with 1, two faces m
Correct Answer - C The number of ways in which different sums can occurs is (3 + 2 + 1)(1 + 2 + 3) = 36. The probability of 4 is...
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What will be the total flux through the faces of the cube, with side of length a if a charge q is placed at (a) A : a corner of the cube (b) B : mid-p
(a). There are eight corners in a cube so, total charge for the cube is `(q)/(8)`. ltbr. Thus, electric flux at `A=(q)/(8epsi_(0))` ltb rgt (b) When the charge q is...
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The longest side of a triangle is three times the shortest side and the third side is 2 cm shorter than the longest side if the perimeter of the trian
Correct Answer - 9 cm Let the length of the shotest side of the triangle be x cm . Then length of the longest side = 3 x cm Length of...
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There is an equilateral triangle with side 4 and a circle with the centre on one of the vertex of that triangle. The arc of that circle divides the tr
Correct Answer - `sqrt((12sqrt3)/pi)` From the eqestion, `sqrt3/4xx16=2xx1/2r^2xxpi/3` `pir^2=12sqrt3orr=sqrt(12sqrt3)/pi`
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Three identical particals, each of charge Q=0.5 `mu` C and mass `m=7.5xx10^(-10)` kg are placed at the verticle of an equilateral triangle of side `r_
Correct Answer - `v=sqrt(1/(4piepsi_0)(6Q^2)/m(1/R_(0)-1/R))=3xx10^2ms^(-1)`
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Three Charges of magnitude `100 muC` are placed at the corners A, Band C ofan equilateral triangle of side 4m. If the charge at A and Care positive an
Correct Answer - `[5.625N]`
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The base of a right pyramid is an equilateral triangle, each side of which is `6sqrt(3)` cm long and its height is 4 cm. Find the total surface area o
Correct Answer - `72 sqrt(3) cm^(2)`
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One side of an equilateral triangle is 36 cm. The mid-points of its sides are joined to form another triangle. Again another triangle is formed by joi
Correct Answer - `432sqrt3 cm^(2)`
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