Question
The number of boys and girls in a school is 180 and 260
respectively. 25% of boys left the school while 40 girls took admission in the school. Find the new ratio of boys to girls in the school.Solution
Required ratio = (0.85 x 180) : (260 + 40) = 135:300 = 9:20
A pond of water appears less deep due to –
Which law states that the ratio of the potential difference across a conductor to the current through it is constant, provided the temperature remains c...
When white light passes through a glass prism, which color deviates the least?
The weight (W) of a body is derived from which formula?
What is the momentum of a 2 kg object moving at 3 m/s?
In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
Parsec is the unit of
Match the following machines with their working principles:
(i) Electric motor - (a) Heat energy into mechanical energy
(ii) Steam engin...
What happens to the electrostatic force between two charges when the distance between them decreases?
Relevant for Exams:
