Question
Pipe A and B can fill the pool in 30 minutes and 40
minutes, respectively. Pipe C can empty half filled pool in 30 minutes. If all the pipes are opened together, then find the time taken to fill the empty pool completelySolution
Time taken by pipe C to empty the full pool = 30 × 2 = 60 minutes Let the capacity of pool = 120 units Number of units of water filled by pipe A alone in one minute = 120/30 = 4 units Number of units of water filled by pipe B alone in one minute = 120/40 = 3 units Number of units of water emptied by pipe C alone in one minute = 120/60 = 2 units Required time taken = 120/(4 + 3 – 2) = 24 minutes
Which atmospheric layer contains ozone layer?
This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as ________.
Adhesive force is the force of
The energy possessed by a body due to its position or shape is known as:
Which physical property causes raindrops to form spherical shapes?
The time period of a second’s pendulum is –
Water gets cooled, when ice is immersed in it. It is because of the phenomenon of
What is the cause of hypermetropia?
A ray of light from the object parallel to principal axis of a concave lens, after refraction appears to diverge from which point on the same side of th...
Which of the following wind is also known as “ICE HEATER?”
Relevant for Exams:
