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Physics
Multiple Choice Question with Two or More Choices Correct Choose the correct statements from the following : (a) The equivalence of inertial and gravitational mass has provided a clue to the deeper understanding of gravitation. (b) At poles, the effect of rotation of earth on the value of g is the minimum. (c) Very massive rockets and extremely tiny particles, such as the molecules of a gas, require the same initial velocity to escape from the earth. (d) A geostationary satellite, if imparted the necessary velocity, can be put in orbit at any height above the earth.
Chemistry
True or False : Alkynes are more dense than water.
Mathematics
In a triangle OAB, E is the mid point of OB and D is a point on AB such that AD : DB = 2 : 1. If OD and AE intersect at P, determine the ratio OP : PD using vector methods.