Question

A glass sheet has a very faint shadow. What inference can we draw from this information?

• A. Glass sheet absorbs most of the incident rays.
• B. Glass sheet reflects back most of the incident rays.
• C. Glass sheet allows most of the incident rays to pass through it.
• D. Glass sheet either reflects or absorbs most of the incident rays.

Answer 1

The correct option is C Glass sheet allows most of the incident rays to pass through it.

Shadow is formed due to absence of light caused when light rays are blocked. This happens when the incident light rays are either absorbed or reflected or both. No shadow is formed if all the incident rays pass through the object. In fact if any object allows all the incident rays to pass through them, it is an ideal transparent object and will be invisible. So if a faint shadow forms, it indicates that a majority of the incident rays are passing through the object.