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گیارہویں جماعت · طبیعیات · 5 سوالات

نام: ____________________   تاریخ: ____________

1. Two perpendicular vectors of magnitude 3 and 4 are added. The magnitude of the resultant is:

   • A 1
   • B 7
   • C 5
   • D 12

2. The dot product of two perpendicular vectors is:

   • A Infinite
   • B 1
   • C 0
   • D Their product

3. The magnitude of the cross product of two parallel vectors is:

   • A A B
   • B 1
   • C A + B
   • D Zero

4. A force of 10 N acts at 30 degrees to the horizontal. What is its horizontal component?

   • A 5 N
   • B 10 N
   • C 17.3 N
   • D 8.7 N

5. The first condition of equilibrium states that:

   • A The net force is zero
   • B Mass is constant
   • C The net torque is zero only
   • D Speed is always zero