Question
Two circles have radii of 18 cm and 32 cm, and they touch
each other externally. What is the length of a common tangent between them?Solution
Let the length of the common tangent be ‘d’ cm
Therefore, ‘d’ = 2 × √(r 1 × r 2 ) = 2 × √(18 × 32) = 2 × 24 = 48 cm
A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is –
Which of the following elements has the maximum number of atoms in their molecular form?
...Which of the following metals forms an amphoteric oxide?
Which metal remains liquid at room temperature?
Which chemical is used to generate light to weld metals?
Chlorophyll-a is present in all photosynthetic organisms except
What happens when one s orbital and one p orbital hybridize?
The sound produced by a bat is –
What happens to a liquid, when the vapour pressure equals the atmospheric pressure?
The most abundant metal in the Earth's crust is:
Relevant for Exams:
