is a sector of a circle with centre O, radius 8 cm and a perimeter 22 cm. Then the area
of sector, in square cm is
A. 6 B. 28 C. 24 D. 48 E. 12
- The area , in cm2 , of a circle has the same numerical value as the circumference, in cm, of
the same circle. The radius , in cm, is
A. 2 B. 1 C.2/π D.1/π E.1/2 - 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 - 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
magnitude of resultant vector of two vectors have the same magnitude and opposite
direction is ………. . - The ……… changes the state of motion of a body.
- The new vectors obtained from sub-dividing a vector is called ……… .
- Q ⃗ and - Q ⃗ are in ……… directions.
- Time is not a ……… quantity.
- Displacement is not a ……… quantity.
- The maximum value of the resultant of two vectors acting at a point occurs when they are in
………. directions. - If the sum of the vectors is zero, the two vectors have same magnitude and ………
directions.
11.Quantities that have only ………. are called scalars.