Physics Period of oscillation of 3 cm microwaves in seconds is 1 × 10–10 0.01 1 × 1010 0.001 1 × 10–10 0.01 1 × 1010 0.001 ANSWER DOWNLOAD EXAMIANS APP
Physics The absolute refractive index of any medium is always: More than one Less than one 1 More than one Less than one 1 ANSWER DOWNLOAD EXAMIANS APP
Physics What type of lens is used in a magnifying glass None of these Convex Plano-concave Concave None of these Convex Plano-concave Concave ANSWER DOWNLOAD EXAMIANS APP
Physics Loudness of sound depends on Wavelength Amplitude Frequency Pitch Wavelength Amplitude Frequency Pitch 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? The frequency of X-ray photon is higher than the frequency of visible radiation photon. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. Both the photons have different energies. 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. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. Both the photons have different energies. The speeds of both the photons in vacuum are different ANSWER DOWNLOAD EXAMIANS APP
Physics A black body can absorb radiations of : Intermediate wavelengths only All wavelengths Higher wavelengths only Lower wavelengths only Intermediate wavelengths only All wavelengths Higher wavelengths only Lower wavelengths only ANSWER DOWNLOAD EXAMIANS APP
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