Physics A white and smooth surface is Good absorber and good reflector of heat Good absorber and bad reflector of heat Bad absorber and good reflector of heat Bad absorber and bad reflector of heat Good absorber and good reflector of heat Good absorber and bad reflector of heat Bad absorber and good reflector of heat Bad absorber and bad reflector of heat ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Optical fiber Radio wave All are operating at nearly the same propagation speed Microwave Optical fiber Radio wave All are operating at nearly the same propagation speed Microwave ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following has the highest value of specific heat? Copper Lead Water Glass Copper Lead Water Glass ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of sky is due to Refraction of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Reflection of sunlight Scattering of longer wavelengths of sunlight in the atmosphere Refraction of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Reflection of sunlight Scattering of longer wavelengths of sunlight in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in 42 years 42 seconds 4.2 years 4.2 seconds 42 years 42 seconds 4.2 years 4.2 seconds ANSWER DOWNLOAD EXAMIANS APP
Physics A standing wave occurs when The speed of the wave is zero or near zero Two waves overlap The amplitude of a wave exceeds its wavelength A wave reflects upon itself The speed of the wave is zero or near zero Two waves overlap The amplitude of a wave exceeds its wavelength A wave reflects upon itself ANSWER DOWNLOAD EXAMIANS APP
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