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If α and β be the roots of equation ax2+bx+c=0,a≠0 and (α+β)(α2+β2)(α3+β3)are in GP,Δ be the discriminant,then a) Δ≠0 b) bΔ≠0 c) cΔ=0 d) bc≠0 ...
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Two bodies of mass {{m}_{1}} and {{m}_{2}} ({{m}_{1}}<{{m}_{2}}) are connected by a light string. The string passes over a frictionless pulley. The speed of the heavier body, when it has covered a distance y, will be *Imag ...
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A 1kg block is being pushed against a wall by a force F = 75 N as shown in the Figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is *Image* ...
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Which species has the maximum number of lone pair of electrons on the central atom ...
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As shown in the figure, two equal masses each of 2 kg are suspended from a spring balance. The reading of the spring balance will be *Image* ...
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The greatest bond angle is found in ...
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The hydrogen bond is strongest in ...
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As shown in figure a monkey of 20 g mass is holding a light rope that passes over a frictionless pulley. A bunch of bananas of the same mass is tied to the other end of rope. In order to get access to the branch the monkey st ...
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The compound which contains both ionic and covalent bonds is ...
