A coin in a glass beaker appears to rise as the beaker is slowly filled with water. Why?

Take two identical 100cm^(3) beakers. Fill one beaker completely with water and the other with kerosence oil. Place the beakers in the scale pans of an ordinary beam balance. It is observed that the beaker filled with water have more mass than the beaker filled with kerosene oil. This is because

A glass beaker of mass 400 kg floats in water with the open end just touching the surface of water and half of the beaker filled with water. The inner volume of the beaker is 500 cm^3 What is the density of the meterial of the beaker ?

Three letters are written on the internal base of a glass beaker in three different colours, red, blue and green. Now, the beaker is filled with the water. Which of the following coloured letter will be seen least raised when seen through the water ?

A glass beaker has diameter 4cm wide at the bottom. An observer observes the edge of bottom when beaker is empty as shown in figure. When the beaker is completely filled with liquid of refractive index n=sqrt(5//2) , he can just see the centre of bottom, then the height of glass beaker is :

Apparatus: Beakers. Chemicals: Samples of various metals , water. Procedure: Drop a piece of each of the metal in separate beakers filled with cold water. Which metal floats on water? Why?

Apparatus: Beakers. Chemicals: Samples of various metals , water. Procedure: Drop a piece of each of the metal in separate beakers filled with cold water. Which metal reacts with water?

A real image of an object is formed by a conex lens at the bottom of an empty beaker. The beaker is now filled with a liquid of refractive index 1.4 to a depth of 7 cm. In order to get the image again at the bottom the beaker shoud be moved

A rectangular glass block of thickness 10 cm and refractive index 1.5 placed over a small coin. A beaker is filled with water of refractive index 4//3 to a height of 10 cm and is placed over the glass block. (a) Find the apparent position of the object when it is viewed at near normal incidence. (b) if the eye is slowly moves away from the normal at a certain position, the object is found to disappear, due to total internal reflection. At what surface does this happen and why ?

A spoon partially inserted in beaker filled with water seems bent. Explain.

A glass beaker is placed partially filled with water in a sink it has a mass of 390 gm and an interior volume of 500 cm^(2) when water starts filling the sink, it is found that if beaker is less than half full it will float but if it is more than half full it remains on the bottom of the sink as the water rises to its rim, what is the density of the material of which the beaker is made?