depolw

A. 2 B. 1 C.2/π D.1/π E.1/2

1. An arc PQ subtends an angle of 120° at the centre of a circle of radius 1 cm. The length of
   arc PQ is
   A. 120 cm B. 60 cm C. π/6cm D. 2π/3cm E.π^2/18 cm
2. If the central angle of a circle of radius 14 cm cuts off an arc of length 28 cm , then the radian
   measure of the angle is
   Sets
3. The set A = { x\ x2 – 7x + 12 =0 } is
   A.{ 3 , 4 } B. { -3 , 4 } C.{ 3 , -4 } D.{ -3 , -4 } E. None of them
   2.The element(s) of A ={ (x,y)\ x+y=8 where x and y are positive integers and x≥ y} is
   1. (1,3) 2.(4,4) 3. (5,3)
      A.1 only B. 2 only C.3 only D.1 and 2 only E.2 and 3 only
      ) The SI unit for force is ……….. .
      (8) Mass is a measure of ………. .
      (9) The attracting force of the earth acting on a body is defined as ……… .
      (10) Weight is a …….. quantity.
      (11) One newton is equal to ……. dyne.