Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes R/2 2R 3R/4 5R/4 R/2 2R 3R/4 5R/4 ANSWER DOWNLOAD EXAMIANS APP
Physics The least penetrating power ray is Beta rays Gamma rays None of these Alpha rays Beta rays Gamma rays None of these Alpha rays ANSWER DOWNLOAD EXAMIANS APP
Physics X-rays region lies between Gamma-rays and ultraviolet region Visible and infra-red region Ultraviolet and visible region Short radio waves and long radio waves Gamma-rays and ultraviolet region Visible and infra-red region Ultraviolet and visible region Short radio waves and long radio waves ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct? In summer, the polar front jet achieves its maximum force. Jet streams are typically continuous over long distances. It is narrow band of high-velocity wind. It follows the wave path near the tropopause at elevations of 8 km to 15 km. In summer, the polar front jet achieves its maximum force. Jet streams are typically continuous over long distances. It is narrow band of high-velocity wind. It follows the wave path near the tropopause at elevations of 8 km to 15 km. ANSWER DOWNLOAD EXAMIANS APP
Physics One light year is equal to 9 trillion miles 6 trillion miles 8 trillion miles 2 trillion miles 9 trillion miles 6 trillion miles 8 trillion miles 2 trillion miles ANSWER DOWNLOAD EXAMIANS APP
Physics Coolis tube is used to produce Gama rays Radio waves X-rays Micro waves Gama rays Radio waves X-rays Micro waves ANSWER DOWNLOAD EXAMIANS APP
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