From the four corners of a rectangular plastic sheet of size `34cmxx24cm`, four squares each of side 2 cm are cut and removed. The remaining sheet is folded to form a cuboid without the top face. If the cuboid is filled with vanilla ice cream which costs Rs. 90 per litre, then find the cost of the ice cream in the cuboid.
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An infinite sheet in xy plane has a uniform surface charge density `sigma`. The thickness of the sheet is infinitesimally small. The sheet begins to m
Correct Answer - (1) `E=sigma/(2in_(0))` perpendiculary away from the sheet `B=(mu_(0)sigmav)/2` parallel to the sheet in `-ve` and `+ve` y direction (2) E= same as in (1);`B=0`
2 Answers 2 views
A system consists of charges +q and +q at the opposite corners of a square of sides 2a and `-q` and `-q` at the other two corners . Calculate the pote
Correct Answer - `V = (1)/(4 pi epsi_(0)) xx (3qa^(2))/(r^(3)) , E = (1)/(4 pi epsi_(0)) xx (9 q a^(2))/(r^(4))`
2 Answers 1 views
Four charges +q,+2q,+3q and +4q are placed at the four corners ABCD of a square of side a. Calculate the field and potential at the centre of the squa
Correct Answer - `E=(sqrt2q)/(piepsilon_0a^a)j` away from the centre and perpendicular to the line joining `+3q` and +4q, `V=(5q)/(sqrt2piepsilon_0a)`
2 Answers 2 views
A charge Q is placed at each of the two opposite corners of a square of side a.A charge is placed at each of the other two corners. (a) if the reultan
Correct Answer - `Q=-2sqrt2q,1/(4piepsi_0)*(-7q^2)/(sqrt2Q)` they form a stable system
2 Answers 3 views
Four point charges `q_(A) = 2 mu C , q_(B) = -5 mu C, q_(C) = 2 mu C and q_(D) = -5 mu C` are located at the corners of a square ABCD of side 10 cm. W
Correct Answer - `1.27 xx 10^(8) N`
2 Answers 1 views
charges of `20nC` each are placed at the corners A and B of a square ABCD of side `sqrt(8)cm` and charges of `-10nC` at the corners C and D. find the
Correct Answer - 9000V
2 Answers 2 views
Ravi earned a sum of Rs. 10800 and donated `40%` of it to charity. He give `15%` of the remaining amount to Ramu. After giving `25%` of the remaining
Correct Answer - 4131
2 Answers 5 views
Anthony spends `x%` of his salary towards expending on food , 2x% of the remaining on transport 3x% of the remaining towards various bills 4x% of the
Correct Answer - `F,T,I,R`
2 Answers 1 views
A square sheet of side 5 cm is cut out from a rectangular piece of an aluminium sheet of length 9 cm and breadth 6 cm. What is the area of the alumini
Correct Answer - 29 `cm^(2)`
2 Answers 1 views
The length and breadth of a rectangular sheet of paper are 60 cm and 30 cm, respectively. A square of side 5 cm is cut and removed from the four corne
Correct Answer - `5000cm^(3)`
2 Answers 3 views