11th class Physics chapter 2 online mcq test with answers for ICS part 1 Physics chapter 2(Vectors and Equilibrium)

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Sr.#	Question	Answer
1	If A x B = 0 then it is concluded that.	A. A and B ar e to each other B. A and B are parallel to each other C. A and B are position vectors D. A and B are unti vectors
2	The rate of change of momentum is	A. Force B. Impulse C. Acceleration D. Power
3	Before launch of any rocket the mass of fuel of the rocket is about	A. 60% of rocket mass B. 50% of rocket mass C. 40% of rocket mass D. 80 % of rocket mass
4	Elastic collision involoves	A. Loss of energy B. Gain of energy C. No gain, no loss of energy D. No relation between energy and elastic collision
5	Rocket ejects the burnt gasses at a speed of over (consuming fuel at rate of 10000kg/s)	A. 4000 m/s B. 400 m/s C. 40000 cm/s D. 400 cm/s
6	If A.B =0 when vector A and B are parallel or anti paralled, then either A or B is a	A. Equal B. Null Vector C. Perpendicular D. Not Zero
7	The Fs of force F of magnitude 30 N making an angle of 60^o with x -axis	A. 7 N B. 15 N C. 10 N D. 5 N
8	If a force of 10 N makes an angle of 30^o with x-axis its y-component is given by	A. 8.66 N B. 0 N C. 0.776 N D. 5 N
9	The scalar product of two vectors will be maximum if they are.	A. Parallel B. Perpedicular C. Anti Parallel D. All of these
10	The magnituede of cross-proecut and dot product of two vectors are equal, the angle betwene the vectors is.	A. 45^o B. Zero C. 180^o D. 90^o