Physics Which one of the following determines the sharpness of image in a camera ? The aperture The exposure time 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 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum? Bunsen and Kirchhoff's experiment Barkla's experiment on scattering of X-rays Geiger and Marsdens experiment on scattering of alpha particles Lamb-Rutherford experiment Bunsen and Kirchhoff's experiment Barkla's experiment on scattering of X-rays Geiger and Marsdens experiment on scattering of alpha particles Lamb-Rutherford experiment ANSWER DOWNLOAD EXAMIANS APP
Physics A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct? Both the photons have different energies. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. The speeds of both the photons in vacuum are different The frequency of X-ray photon is higher than the frequency of visible radiation photon. Both the photons have different energies. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. The speeds of both the photons in vacuum are different The frequency of X-ray photon is higher than the frequency of visible radiation photon. ANSWER DOWNLOAD EXAMIANS APP
Physics The sparkling of a diamond is due to Interference of light Total internal reflection of light Refraction of light Polarisation of light Interference of light Total internal reflection of light Refraction of light Polarisation of light ANSWER DOWNLOAD EXAMIANS APP
Physics A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be A circle A horizontal straight line A parabola A vertical straight line A circle A horizontal straight line A parabola A vertical straight line ANSWER DOWNLOAD EXAMIANS APP
Physics Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit ultraviolet light visible light X-rays radio waves ultraviolet light visible light X-rays radio waves ANSWER DOWNLOAD EXAMIANS APP
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