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a convex lens of focal length 25cms was cut along the diameter into two identical halves and then was again set leaving a thin gap of width a= 0.1cm as shown. A narrow slit emtting monochromatic light of λ = 0.6μm was place ...
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1.) there are four machines and it is known that exactly two of them are faulty. they are tested , one by one , in a random order till both the faulty machines are identified. then the probability that only two tests are need ...
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a force F\vec{} = -k(yi\dot{} + xj\dot{}) (where K is a positive constant) acts on a particle moving in the xy plane starting from the origin the particle is taken along the positive x axis to the point (a,0) and then paralle ...
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a force F\vec{} = -k(yi\dot{} + xj\dot{}) (where K is a positive constant acts on a particle moving in the xy plane starting from the origin the particle is taken along the positive x axis to the point (a,0) and then parallel ...
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A circle of variable radius is given by x2+y2+2gx+2fy+c=0 cuts the rectangular hyperbola x2-y2 = 9a2 in points P, Q, R and S at (xiyi) (i = 1,2,3,4) find centroid of triangle PQR ! ...
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f(x,y) = x2-y2+2x+4y-12 ok ? .this is the curve or anything ! [4] NOW, IF r is the radius of the circle which touches the curve f(x,y)=0, y=x+1 and y=-x+3, then the least possible value of 'r' (in units) approximately is WHAT ...
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Consider the points A≡(0,1) and B≡(2,0) .let P be a point on the line 4x+3y+9=0. coordinates of the point 'P' such that |PA-PB| is maximum, are ? ...
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two medians drawn from the acute angled vertices of a right angled triangle intersect at an angle 30 degrees.if the length of the hypotenuse of the triangle is 4 , then area of the triangle is ? ...
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"nucleophilicity runs parallel to basicity when the nucleophilic atom is the same in various species" ...
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100gm of CaCO3 is heated in a vessel of 100 l capacity at 1000k. CaCO3 decomposes to form CaO and CO2 ..if kp for the equilibrium CaCO3 <----> CaO + CO2 is 7.5 atm, then find the % of CaCO3 unreacted ...
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*Image* PLEASE guys.... cooperate with the picture !!.................. ...
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IF Kp for the equilibrium , (s) CuSO4.5H2O <---------> CuSO4.3H2O + H20 is 1.086 * 10-4 atm2 at 25°C , then the efflorescent nature of CuSO4.5H2O can be noticed when vapour pressure of ...
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in haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction , which yielded only 50% of the expected product. what will be the composition of gaseous under the aforesaid condition in the end & ...
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sixteen balls of equal mass are strung like beads on a string, some are placed on a smooth inclined plane of inclinaton sin inverse (1/3) and the rest hang over the top of the plane. how the balls have been arranged if the ac ...
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a whel consists of a circular disc of radius 'a' with four circular holes, each of radius a/4. the centres of the holes form a square and each centre is at a distance a/2 from the centre of the disc. if m is the mass ...
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a ball is dropped from a height. if it takes 0.200s to cross the last 6.00m before hitting the ground , find the height from which it was dropped ..(take g=10) ...
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A pitot tube is fixed in a main of diameter 15cm and the difference in pressure indicated by gauge is 4cm of water column. find the volume of water passing through the main in one minute !!!!!!! ...
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a boat floating in a water tank is carrying a number of large stones. if the stones were unloaded into water , what will happen to the water level ?...give reason to it ! ...
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a triangle is immersed in a liquid with its base towards the surface. how must we divide the triangle into two parts by a straight horizontal line such that equal thrust acts on the parts ? ...
