Four resistance 
are connected so that they form the side of a rectangle AB, BC, CD and DA respectively. Another resistance of 
is connected across the diagonal AC. The equivalent resistance between A and B is
are connected so that they form the side of a rectangle AB, BC, CD and DA respectively. Another resistance of is connected across the diagonal AC. The equivalent resistance between A and B is1. 2Ω
2. 5Ω
3. 7Ω
4. 10Ω
2. 5Ω
3. 7Ω
4. 10Ω
Subtopic: Combination of Resistors |
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The velocity of a particle moving in the x – y plane is given by
and 
Where, t = 0, x = 8 and y = 0, the path of the particle is
and Where, t = 0, x = 8 and y = 0, the path of the particle is
1. A straight line
2. an ellipse
3. a circle
4. a parabola
2. an ellipse
3. a circle
4. a parabola
Subtopic: Speed & Velocity |
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A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In other to make the rope perfectly horizontal, the force applied to each of its ends must be
1. less than w
2. equal to w
3. equal to 2 w
4. infinitely large
Subtopic: Application of Laws |
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A particle moves along a curve of unknown shape but magnitude of force F is constant and always acts along tangent to the curve. Then,
1. F may be conservative
2. F must be conservative
3. F may be non-conservative
4. F must be non-conservative
2. F must be conservative
3. F may be non-conservative
4. F must be non-conservative
Subtopic: Work Energy Theorem |
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A block has been placed on an inclined plane with the slope angle θ, block slide down the plane at constant speed. The coefficient of kinetic friction is equal to
1. sin θ
2. cos θ
3. g
4. tan θ
Subtopic: Friction |
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A charge q is located at the centre of a cube. The electric flux through any face is
1. \(\frac{\pi q}{6(4\pi \epsilon_0)}\)
2. \(\frac{q}{6(4\pi \epsilon_0)}\)
3. \(\frac{2\pi q}{6(4\pi \epsilon_0)}\)
4. \(\frac{4\pi q}{6(4\pi \epsilon_0)}\)
Subtopic: Gauss's Law |
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and that of oxygen at 402 ° C is 
, then
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