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Antibiotics are the medicines used to kill or weaken the bacteria and also protozoa to some extent. Antibiotics can be natural, semi-synthetic, or synthetic. Penicillin in 1928 by Alexander Fleming was obtained from Penicillium Notatum . These are a group of antibacterial drugs obtained from Penicillium fungi. Penicillin fights the bacteria by attacking the cell wall forming substances (peptidoglycans). Anne Miller was the first patient who got treated using penicillin in 1942 .
A coil takes 4 A from a 12 V DC source. When connected to a 12 V, 50 rad/s AC source, the current is 2.4 A. The inductance of the coil is:
Which of the following is a characteristic of a conductor?
Which of the following materials behaves as a dielectric?
What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as?
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:
Which instrument is used to measure the moisture content in the air?
A soap bubble shows colours when illuminated with white light. This is due to –
What is the value of 1 horsepower in watts?
The order of wavelengths for ordinary light is:
Which graph represents uniform motion?
