Science Quiz 26

Total internal reflection can take place when light travels from: [1996]

Assertion (A): Transformer is useful for stepping up or stepping down voltages. Reason (R): Transformer is a device used in D.C. circuits. In the context of the above two statements, which one of the following is correct? [1996]

A simple machine helps a person doing: [1996]

Consider the following statements: A person in a spaceship located halfway between the Earth and the Sun will notice that the: [1996]

‘Diamond Ring’ is a phenomenon observed: [1996]

The alpha-particle carries two positive charges. Its mass is very nearly equal to that of: [1996]

The technique used to transmit audio signals in television broadcasts is: [1995]

Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not? [1995]

The normal temperature of the human body on the Kelvin scale is: [1995]

Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape. Reason (R): The refractive index of diamond is less than that of glass. [1995]