An opaque object is placed in front of a spotlight. which does not occur?
a. absorption
b. illumination
c. reflection
d. transmission

D. Transmission

Explanation:

A body is considered opaque to radiation (generally thermal radiation) when its thermal transmittance (the amount of energy that passes through the body per unit of time) is null or zero.

In this sense, when an opaque body is placed in front of a light source, it is illuminated, there will be  reflection and absorption of light, but not transmission.

The correct answer is ) B  Illumination does not occur when an opaque object is placed in front of a spotlight.                                

Explanation:

The following things could happen when a light wave with a single frequency strikes an object.

Cheers!

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form