Balmer series was observed and analysed before the other series .Can you suggest a reason for such an order?

The Balmer series for the H-atom can be observed ...

Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

Explain Balmer series and gives its equation.

To observe binary fission in Amoeba. Apparatus: Microscope, permanent slide of Amoeba. Procedure : rarr Observe a permanent slide of Amoeba under a microscope. rarr Observe another permanent slide of Amoeba showing binary fission. rarr Compare your observations in both the slides. Can you give the sequence of binary fission in Amoeba ?

Define : Oxygen dissociation curve. Can you give reason for its sigmoid appearance ?

Can you find the surface area of sphere in any other way?

Observe your surroundings carefully and write any three situations of your daily life where you can observe lines and angles. Draw the pictures in your note book and collect some pictures.

The wavelength of first line of Balmer series is 656 nm . Calculate the wave length of second line of this series. (Note : first line means n_(3) to n_(2) and second line means n_(4) to n_(2)