Physics A star appears twinkling in the sky because of Reflection of light by atmosphere Scattering of light by atmosphere Diffraction of light by atmosphere Refraction of light by atmosphere Reflection of light by atmosphere Scattering of light by atmosphere Diffraction of light by atmosphere Refraction of light by atmosphere ANSWER DOWNLOAD EXAMIANS APP
Physics The scientist who first sent electromagnetic waves to distant places is Heinrich Hertz Thomas Alva Edison James Clerk Maxwell John Logie Baird Heinrich Hertz Thomas Alva Edison James Clerk Maxwell John Logie Baird ANSWER DOWNLOAD EXAMIANS APP
Physics The colours of stars depend on their Temperature Atmospheric pressure Radius Distance Temperature Atmospheric pressure Radius Distance ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Radio wave Optical fiber All are operating at nearly the same propagation speed Microwave Radio wave Optical fiber All are operating at nearly the same propagation speed Microwave ANSWER DOWNLOAD EXAMIANS APP
Physics The period of revolution of a certain planet in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be: 8 T 2 T 1 T 4 T 8 T 2 T 1 T 4 T ANSWER DOWNLOAD EXAMIANS APP
Physics For Gamma radiation, what stops its penetrating abilities? Steal Lead All of these Concrete Steal Lead All of these Concrete ANSWER DOWNLOAD EXAMIANS APP
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