If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh `16 2/3`kilograms?

A crystalline solid substance has a density of 10 g//cm^(3) and the length of the edge of the unit cell (FCC) is 2.0A^(0) . How many number of atoms are present in 200 grams of the solid?

A box of medicine tablets contains 3,00,000 tablets each weighing 15 mg.What is the total weight of all the tablets in the box in grams and in kilograms?

In a primary school there shall be 2 teachers to 40 students. If there are 200 students enrolled in the school, how many teachers should be there in the school in the same ratio?

A self help group wants to manufacture joker's caps (conical caps) of 3 cm radius and 4 cm height. If the available colour paper sheet is 1000 cm^(2) , then how many caps can be manufactured from that paper sheet ?

In young's experiment using monochromatic light, the fringe pattern shifts by a certain distance on the screen when a mica sheet of refractive index 1.6 and thickness 2 micron is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the slits and the screen is doubled. It is found that the distance between successive maxima now is the same as the observed fringe shit upon the introduction of the mica sheet. The wavelength of light is

A Rectangular sheet of paper is 5 2/3 cm long and 3 1/4 cm wide. Find its Perimeter.

A Rectangular sheet of Paper is 5.2 cm long 3.4 cm wide. Find its Perimeter.