Which one of the following is responsible for the working of Newton's color disc experiment?

• Formation of pure spectra

• Formation of impure spectra

• Persistence of vision

• Principle of complementary colour

The dimension MLT^-2 corresponds to

• force

• work done

• acceleration

• veolcity

Who is the founder of quantum theory of radiation?

• Einstein

• Bohr

• Plank

• S N Bose

Fiber optics cable used in communication, works on the principle of

• regular reflection of light

• diffuse reflection of light

• refraction of light

• total internal reflection of light

Which was the first electronic computer constructed at the Moore School of Engineering?

• EOVAC

• ONIVAC

• ENIAC

• EDSAC