Frequency - The number of waves per second , Hertz (Hz) - Units for frequency , Period  - The time taken for one wave to pass a point , Seconds (s) - Units for period , T = - 1/f, f = - N/t,

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?