Mdcat-past-papers Quiz

981. One complete circle is equal to:

2π radian
3 radian
5 radian
6 radian

982. An object moving along circular path of radius 1m. It covers a distance of 2m along circumference of circle. The angular distance is:

1 rad
2 rad
3 rad
2/3 rad

983. The relation between angular and linear velocity is:

v = r/w
v = rw
w = v/r
w = v/r

984. One degree is equal to:

0.15 rad
0.0175 rad
0.025 rad
0.0275 rad

985. A rotating wheel coincides 12 rev in 4s. Find the average angular velocity in rad/sec.

24.6 rad/s
16.8 rad/s
10.4 rad/s
18.8 rad/s

986. An electric motor turns at 400 revolutions per minute. Its angular velocity in rad/s will be:

20 π /3
40 π /3
30 π /3
30 π /4

987. The velocity of an object moving in a circle is:

Constant
Variable
Zero
Negative

988. Sara goes around a circular track that has diameter of 20m. If she runs around the entire track for a distance of 180m. What is her angular displacement?

18 radians
18 radians
50 radians
8 radians

989. Angle swept by minute hand in one minute is:

6°
3°
8°
20°

990. To find the direction of angular displacement:

Grasp the axis of rotation in right hand
Grasp the axis of rotation in left hand
Put the thumb of right hand in the direction of circular motion
Put the thumb of left hand in the direction of circular motion

991. A particle moves in a circle of radius 200cm with a linear speed of 20m/s. Find the angular velocity:

2 rad s⁻¹
200 rad s⁻¹
20 rad s⁻¹
10 rad s⁻¹

992. For anti-clock wise rotation the angular displacement is:

Negative
Positive
Null
Zero

993. How many degrees in 2π/5 radians?

50°
60°
72°
120°

994. Work done due to centripetal force for circular motion will be:

Maximum
Reduced
Half
Zero

995. A fighter plane is moving in a vertical circle of radius r. Its minimum velocity at the highest point of circle will be:

√3gr
√2gr
√gr
√gr/2

996. The circular line has fix distance from -----?

Any point
A point on a circle
A fix point
Point from outside

997. If a particle is moving on uniform circular motion, then:

V and a are anti-parallel
V and a are parallel
V and a are perpendicular
Zero acceleration

998. A particle of mass 'm' is moving on a circular path of radius 'r' with velocity 'v', then centripetal force acting on it is F. If the velocity of particle increases by 2 times and radius of circular path increases by 4 times then new centripetal force F' will be:

F' = 2F
F' = 1⁄2 F
F' = 4F
F' = F

999. A roller coaster is moving with 30ms⁻¹ on a circular track of radius 30m. The net mass of coaster + passengers is 'm' the centripetal force acting on it is:

900m
30m
450m
30m

1000. A cyclist moving on a circular track skids because:

Limiting friction ⊥ centripetal force
Limiting friction > required centripetal force
Limiting friction opposes centripetal force
Limiting friction = required centripetal force