What is the Shape of a Rainbow? | SMART START | Cbse class 6 | Rashika Mam #shorts

What is the shape of SF_(6) molecule?

What will be the shape of XeF_(6) molecule ?

Read the given question and decide which of the following statements is/are sufficient to answer the question. What is the number of students in the class? Statements: 1) The class contains 10^(th) class students. 2) The class contains 6 girls and boys.

(a) What is spectrum ? What is the name of glass shape used to produce a spectrum ? (b) How many colours are there in a full spectrum of white light ? Write the various colours of spectrum in the order, starting with red.

(i)Find the class mark of the class 90-120. (ii)In a frequency distribution, the mid-value of the class is 10 and width of the class is 6. Find the lowe limit of the class. (iii)The width of each of the five continuous classes in a frequency distribution is 5 and lowe class limit of the lowest class is 10. What is the upper class limit of the highest class? (iv) The class marks of a frequency distribution are 15,20,25...... Find the class corresponding to the class mark 20. (v)In the class intervals 10-20, 20-30, find the class in which 20 is included.

The magnetic induction due to a short magnet at a distance of 20 cm on the axial line of a short bar magnet is 1.5xx10^(-6)" Wb/m"^(2) . What is the magnetic induction at a point on its axis at a distance of 5 cm from the centre of the magnet?