We can make long distance photographs using _________.

(a)

radio waves

(b)

visible light

(c)

X-rays

(d)

IR rays

_________ emission spectrum is used to identify the gas used.

(a)

Continuous

(b)

Line

(c)

Band

(d)

Solid

Carbon are produces ________ spectrum.

(a)

characteristic

(b)

line

(c)

band

(d)

continuous

A pure green glass plate when, placed in the path of white light, absorbs________.

(a)

everything

(b)

everything except green

(c)

nothing

(d)

only red

_________ spectra are used for making dyes

(a)

continuous emission

(b)

band emission

(c)

band absorption

(d)

line spectra