An industrial loom weaves 0.128 m wires of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth? `178` b. `195` c. `488` d. `204`

Cloth Makers Inc. has p spindles, each of which can produce q metres of cloth on an average in r minutes. If the spindles are made to run with no interruption, then how many hours will it take for 20,000 metres of cloth to be produced? a. (20000 p q)/r b. (20000 r q)/p c. (20000 r)/(p q) d. (20000 r)/(60 p q)

A skating champion moves along the circumference of a circle of radius 28m in 44 sec.How many seconds will it take her to move along the perimeter of a hexagon of side 48m?(a)48 (b) 68 (c) 72 (d) 84 (d) 90

A wall of 100 metres can be built by. 7 men or 10 women in 10 days. How many days will 14 men and 20 women take to build a wall of 600 metres? 15 b. \ 20 c. 25 d. 30

A tailor has 37.5 metres of cloth and he has to make 8 pieces out of a metre of cloth.How many pieces can be make out of this cloth? (a) 320 (b) 360 (c) 400 (d) None of these

Two trains of lengths 120 m and 90 m are running with speeds of 80 km/hr and 55 km/hr respectively towards each other on parallel lines. lf they are 90 m apart, after how many seconds they will cross each other? 5. 6 s e c b. 7. 2 s e c c. 8 s e c d. 9 s e c

A train 240 m, long passed a pole in 24 seconds. How long will it takes to pass a platform 650 m long? 65 s e c b. 100 s e c c.89 s e c d. 150 s e c

A star is 8. 1xx10^(13) km away from the earth. Suppose light travels at the speed of 3. 0xx10^5 km per second. How long will it take the light from the star to reach the earth? 7. 5xx10^3hou r s b. 7. 5xx10^4 hou r s c. 2. 7xx10^(10) s e con d s d. 2. 7xx10^(11)s e con d s

A train moving at 15 m/sec takes 20 seconds to pass a cyclist moving in the same direction as that of the train. How much time will be train need to pass the cyclist, if the cyclist moves in a direction opposite to that of the train and if the speed of the cyclist is 5m/sec and the length of the cycle is 1 m? 9. 95 s e c b. 10 s e c c. 10. 05 s e c d. 12 s e c

The radius of a cylindrical cistern is 10 metres and its height is 15 metres. Initially the cistern is empty. We start filling the cistern with water through a pipe whose diameter is 50 cm. Water is coming out of the pipe with a velocity of 5 m/sec. How many minutes will it take in filling the cistern with water? (a) 20 (b) 40 (c) 60 (d) 80

A car moves with a speed of 54 kmh^-1 towards a cliff. The horn of the car emits sound of frequency 400 Hz at a speed of 335 m s^-1 . (a) Find the wavelength of the sound emitted by the horn in front of the car. (b) Find the wavelength of the wave reflected from the cliff (c) What frequency does a person sitting in the car hear for the reflected sound wave ? (d) How many beats does he hear in 10 seconds between the sound coming directly from the horn and that coming after the reflection ?