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

Which among the following standard protocol is the most widely used by the Internet?

• HTTP

• TCP/IP

• SMTP

• SLIP

The outer skin most of the crustaceans are made up of a carbohydrate. This carbohydrate is

• cellulose

• galactose

• chitin

• starch

Rutherford's scattering experiment proved the presence of

• atoms in all matter

• electrons in atoms

• neutrons in atoms

• nucleus in atoms

When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy state, they emit light, which we can observe in

• Raman spectra

• Absorption spectra

• Emission spectra

• Fluroescence

Blood pressure may be increased by the excessive secretion of

• Thyroxine

• Testosterone

• Estradiol

• Estrol