CAN you guess? | #puzzle riddles, Paheli video in Hindi with answer | #shorts BitBat puzzle

(a) An X-ray tube produces a continuous spectrum of radiation with its shorts wavelength end ate 0.45 Å . What is the maximum energy of the photon in the radiation? (b) From your answer to (a) , guess what order of accelerating voltage (for electrons) is required in such a tube?

Each question in this section has a sentence with three underlined parts labelled (a), (b) and (c ). Read each sentence to find out whether there is any error in any underlined part and indicate you answer in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, you answer should be indicated as (d). ("He boasts of having visited Europe many times")/((a))" " (" but he can neither speak English")/((b))" " ("nor he can speak French")/((c ))" " ("No error")/((d))

In a crossword puzzle 10 words are to be guessed of which 5 words have each an alternative solution also.No.of possible solutions is

Between two ends of a bookshelf in your study are displayed five of your favourite puzzle books. If you decide to arrange these five books in every possible combination and move just one book every minute, how long would it take you to do so?