10 glass lid

Refraction of Light through a Glass Slab - Let us now perform an experiment and find out how light gets refracted when it is incident on a rectangular glass slab. Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD..

Refraction of Light..

A random survey of 400 students at a middle school in a city showed that 40 students were having glasses or contact lenses. Out of 200 students, how many would be expected to have glasses or contact lenses ? => 10 or 4 or 20 or 40..

Soda glass, also called window glass, is got by fusing sodium carbonate (Na 2 CO 3 ), calcium carbonate (CaCO 3 ) and sand or quartz (SiO 2 ) in proper proportions. Small amount of scrap glass (pieces and bits of waste glass from previous process runs) is add..

Question: A zinc rod was kept in a glass container having CuSO 4 solution. On examining, it was found that the blue colour of the solution had faded. After few days when the zinc rod was taken out of the solution, a number of small holes were noticed in it. State the reason and give ..

. A hyphen is not put in-between the number and the unit, when the number is used as an adjective. E.g., 16 mm film. For writing the thickness of a glass of 10 mm, it is written as 10 mm and not 10-mm. A space must be left between a number and a unit. E.g., 6..

Question: The lid of the solar cooker is made up of ______. 1. plastic sheet 2. black sheet 3. plane mirror 4. glass Answer: ..

1. Prepare 10:1 aqueous solution of platinum chloride by dissolving 1 g of the salt in 10 ml of distilled water. 2. Mount a section of chlorophyll-free leaf in a drop of this solution on a glass slid..

A solar cooker contains a wooden box having thermocol lining from inside. A box made aluminium is placed inside the wooden box. The inner side of the aluminium box is painted black. The top is closed by a glass sheet. A plane mirror is fixed to the hinged lid. The box is closed ..

1. Prepare1:1 solution of diphenylamine by addition 0.1 g of it in 10 ml of sulphuric acid. 2. Put 1-2 drops of the reagent over a glass slide. Place a section of chlorophyll-free leaf in the reagent and observe under the microscop..