Which letters of the English alphabet form images that look the same as the original letters?

Write the capital letters of the English alphabet in your notebook. Try to draw their axes of symmetry. Which have one axis of symmetry ? Which have more than one axis of symmetry?

A convex lens forms a real and inverted image of a pencil at a distance of 40 cm from the lens. The image formed is of the same size as the object Find the focal length and power of the lens. At what distance is the : object placed from the lens?

Let the set of English alphabets be the Universal set. The letters of the word 'LAUGH' is one set and the letter of the word 'CRY' is another set. We can say that thses are two disjoint sets. Observe that intersection of these two sets is empty

Which of the following letter is chiral ?

Choose the correct alternative and write it along with its alloted alphabet: To object an image of the same size as that of an object with the help of a convex lens, the object should be placed

A letters is taken at random from the letters of the word 'ASSISTANT' and another letter is taken at random from the letters of the word 'STATISTICS'. Find the probability that the selected letters are the same.

How many words can be formed from the letters of the word COURTESY, whose first letter is C and the last letter is Y?

How many two letter words can be formed using letters from the word SPACE, when repetition of letters (i) is allowed, (ii) is not allowed?