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2 mirrors are inclined at an angle θ as shown in figure.Light ray is incident parallel to one mirror.The ray will start retracing its path after the third collision if: a)θ=45° b)θ=30° c)θ=60° d)all three *Image* ...
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Consider a parabola y=\frac{x^{2}}{4} and the point F (0, 1). Let A1(x1, y1), A2(x2, y2), A3(x3, y3),........, An(xn, yn) are 'n' points on the parabola such xk > 0 and <OFA_{k}=\frac{k\Pi }{2n} (k=1,2,3,....,n) . Then ...
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The smallest ketone and its next homologue are reacted with NH2OH to forn oxime. (a) two different oximes are formed. (b)three diff oximes are formed . (c)two oximes are optically active. (d) all oximes are optically active. ...
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*Image* second one please explain clearly.. first one please confirm answer.. ...
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*Image* Ans.q2 only if you are 100°/° sure ...
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If total number of runs scored in n matches is ( n+1/4 )(2n+1-n-2) where n.1, and the runs scored in the kth match are given by k(2n+1-k), wher 1≤k≤n. Find n. ...
