Question
ABC is an equilateral triangle with sides of 24cm. Find
the difference between its in-radius and circum-radius.Solution
In-radius of an equilateral triangle = aβ3/6 units where a = side of the equilateral triangle Therefore, the in-radius of the given equilateral triangle = (24β3/6) = 4β3 cm Circum-radius of the given equilateral triangle = 2 Γ 4β3= 8β3 cm required difference= 8β3cm - 4β3cm= 4β3cm
A 100 ΞΌF capacitor is charged to a voltage of 50V. How much energy is stored in the capacitor?
What is the unit of the refractive index?
The mass and energy equivalent to 1 a.m.u. respectively are -
Which type of mirror is used in car headlights?
The electric and magnetic fields of an electromagnetic wave are _____________
Which law states that the total current entering a junction is equal to the total current leaving the junction?
A solid non-conducting sphere of radius R carries a uniform volume charge density Ο. What is the ratio of electric field at r = R (surface) to that at ...
Compared to fresh Water, the freezing point of sea water is -
Water flows in a horizontal pipe of non-uniform area of cross-section at a pressure difference of 1.6 cm of mercury. If the velocity of water at the la...
The refractive index of glass is 1.5. What is the speed of light in glass?
(Speed of light in vacuum is 3.0 Γ108 m s-1)
