Physics Purpose of an optical filter is to Transmit or absorb light of different colours Dispense light into component colours Refract light of different colours Reflect lights of different colours Transmit or absorb light of different colours Dispense light into component colours Refract light of different colours Reflect lights of different colours ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following determines the sharpness of image in a camera ? The focal length of the lens Size of the camera The aperture The exposure time The focal length of the lens Size of the camera The aperture The exposure time ANSWER DOWNLOAD EXAMIANS APP
Physics Red light is used for signals because it has High intensity Low refraction in the medium Long wavelength High frequency High intensity Low refraction in the medium Long wavelength High frequency ANSWER DOWNLOAD EXAMIANS APP
Physics Materials that allow electricity to flow are called Electron flows Insulators Conductors Stimulators Electron flows Insulators Conductors Stimulators ANSWER DOWNLOAD EXAMIANS APP
Physics Stars are held together by Magnetic forces Electrical forces Ionic forces Gravitational forces Magnetic forces Electrical forces Ionic forces Gravitational forces ANSWER DOWNLOAD EXAMIANS APP
Physics The sound produced by a bat is– Audible Infrasonic Ultrasonic Subsonic Audible Infrasonic Ultrasonic Subsonic ANSWER DOWNLOAD EXAMIANS APP
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