Physics Which of the following is the fastest communication channel? Microwave 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 ANSWER DOWNLOAD EXAMIANS APP
Physics The scientist who first sent electromagnetic waves to distant places is John Logie Baird Thomas Alva Edison James Clerk Maxwell Heinrich Hertz John Logie Baird Thomas Alva Edison James Clerk Maxwell Heinrich Hertz ANSWER DOWNLOAD EXAMIANS APP
Physics Choose the most appropriate answer: Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation? Diffraction Scattering Polarization Interference Diffraction Scattering Polarization Interference ANSWER DOWNLOAD EXAMIANS APP
Physics Two electric bulbs marked 25W – 220V and 100W – 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse? Neither Both 25 W 100 W Neither Both 25 W 100 W ANSWER DOWNLOAD EXAMIANS APP
Physics A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? Increase Will increase first and then dcrease Dacrease Remain constant Increase Will increase first and then dcrease Dacrease Remain constant ANSWER DOWNLOAD EXAMIANS APP
Physics Atomic hydrogen has a life period of A fraction of a second One minute One hour One day A fraction of a second One minute One hour One day ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS