Physics The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because There is no air or any other gas in the bell jar The ringing is not loud enough The glass of the bell jar absorbs the sound waves The bell jar is too small There is no air or any other gas in the bell jar The ringing is not loud enough The glass of the bell jar absorbs the sound waves The bell jar is too small ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following determines the sharpness of image in a camera ? The aperture The focal length of the lens Size of the camera The exposure time The aperture The focal length of the lens Size of the camera The exposure time ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following is the value of one nanometer? 10-4 cm 10-3 cm 10-6 cm 10-7 cm 10-4 cm 10-3 cm 10-6 cm 10-7 cm ANSWER DOWNLOAD EXAMIANS APP
Physics The focal length of a concave mirror with a radius of curvature of 20.0 cm is : 10 cm 5 cm 20 cm 15 cm 10 cm 5 cm 20 cm 15 cm ANSWER DOWNLOAD EXAMIANS APP
Physics One thousand microns is equal to 10-3m 10-9m 10-6m 10-12m 10-3m 10-9m 10-6m 10-12m ANSWER DOWNLOAD EXAMIANS APP
Physics Which, of the following radiations has the least wavelength ? A-rays X-rays G-rays B-rays A-rays X-rays G-rays B-rays ANSWER DOWNLOAD EXAMIANS APP
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