Question
To do a certain work, the ratio of the efficiencies of A
and B is 7 : 6. Working together, they can complete the same work in 21 days. What part of the same work will be completed by B alone in 26 days?Solution
The correct answer is B
In a charged conductor, where do the electrical charges tend to reside?
Which of the following quantities is a scalar? Â
The refractive index of glass is 1.5. What is the speed of light in glass?
(Speed of light in vacuum is 3.0 ×108 m s-1)
Two capacitors of 6 µF and 3 µF are connected in series and a potential difference of 90 V is applied. The energy stored in the system is:
Find the resistance when a current of 2 A flows under a voltage of 10 V. Â
What is the current flowing through a 24 Ω resistor connected to a 12 V battery?
Who laid the foundations of Quantum Theory?
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:
A plane mirror is placed on a wall. A man walks directly toward the mirror at 2 m/s. The speed at which his image approaches him is:
Compared to fresh Water, the freezing point of sea water is -
