Physics 1260 Exam 3 DeWitt 2025/2026
Exam Questions and Verified Answers |
Already Graded A+
Most waves in the electromagnetic spectrum are... - 🧠 ANSWER
✔✔Invisible
Electromagnetic waves consist of... - 🧠 ANSWER ✔✔Oscillating electric
and magnetic fields
Which of the following cannot travel in a vacuum (free space)? - 🧠
ANSWER ✔✔Sound waves
,The fact that you can see stars in the nighttime sky is evidence that... - 🧠
ANSWER ✔✔Our atmosphere is transparent to visible light and light can
travel in a vacuum
Light is reflected when... - 🧠 ANSWER ✔✔Incident light is returned to the
medium from which it came
When sunlight illuminates a page from your book it... - 🧠 ANSWER
✔✔Reflects most of it and absorbs at the text lettering
Light travels from one place to another along a path of least... - 🧠 ANSWER
✔✔Time
Fermat's Principle applies to both... - 🧠 ANSWER ✔✔Reflection and
Refraction
The inversion of your image in a plane mirror is actually an inversion of... -
🧠 ANSWER ✔✔Left-Right and Front-Back
Refraction occurs when light passing from one medium to another... - 🧠
ANSWER ✔✔Changes speed
When a light ray in air enters water at 15 degrees from the normal it... - 🧠
ANSWER ✔✔Always bends toward the normal
, Which are the consequences of different speeds of light in different media?
- 🧠 ANSWER ✔✔Mirages, Rainbows, Brilliant colors of diamonds
The type of lens that SPREADS parallel light is a... - 🧠 ANSWER
✔✔Diverging Lens
The type of lens that BRINGS parallel light together is a... - 🧠 ANSWER
✔✔Converging Lens
Snell's Law: From LOW n to HIGH n, a transmitted ray is bent, or
refracted... - 🧠 ANSWER ✔✔Toward the normal
Snell's Law: From HIGH n to LOW n, a transmitted ray is bent, or
refracted... - 🧠 ANSWER ✔✔Away from the normal
The index of refraction from crown glass, common in eyeglasses, is 1.52.
The index of refraction of a particular plastic lens is 1.76. Light bends more
in the... - 🧠 ANSWER ✔✔Plastic lens
The image of the "infinitely-far-away" Sun produced by a converging lens
appears... - 🧠 ANSWER ✔✔At the focal point
A "pinhole camera" has no lens. The tiny pinhole opening ensures that rays
of light from different parts of an object... - 🧠 ANSWER ✔✔Don't overlap
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
Exam Questions and Verified Answers |
Already Graded A+
Most waves in the electromagnetic spectrum are... - 🧠 ANSWER
✔✔Invisible
Electromagnetic waves consist of... - 🧠 ANSWER ✔✔Oscillating electric
and magnetic fields
Which of the following cannot travel in a vacuum (free space)? - 🧠
ANSWER ✔✔Sound waves
,The fact that you can see stars in the nighttime sky is evidence that... - 🧠
ANSWER ✔✔Our atmosphere is transparent to visible light and light can
travel in a vacuum
Light is reflected when... - 🧠 ANSWER ✔✔Incident light is returned to the
medium from which it came
When sunlight illuminates a page from your book it... - 🧠 ANSWER
✔✔Reflects most of it and absorbs at the text lettering
Light travels from one place to another along a path of least... - 🧠 ANSWER
✔✔Time
Fermat's Principle applies to both... - 🧠 ANSWER ✔✔Reflection and
Refraction
The inversion of your image in a plane mirror is actually an inversion of... -
🧠 ANSWER ✔✔Left-Right and Front-Back
Refraction occurs when light passing from one medium to another... - 🧠
ANSWER ✔✔Changes speed
When a light ray in air enters water at 15 degrees from the normal it... - 🧠
ANSWER ✔✔Always bends toward the normal
, Which are the consequences of different speeds of light in different media?
- 🧠 ANSWER ✔✔Mirages, Rainbows, Brilliant colors of diamonds
The type of lens that SPREADS parallel light is a... - 🧠 ANSWER
✔✔Diverging Lens
The type of lens that BRINGS parallel light together is a... - 🧠 ANSWER
✔✔Converging Lens
Snell's Law: From LOW n to HIGH n, a transmitted ray is bent, or
refracted... - 🧠 ANSWER ✔✔Toward the normal
Snell's Law: From HIGH n to LOW n, a transmitted ray is bent, or
refracted... - 🧠 ANSWER ✔✔Away from the normal
The index of refraction from crown glass, common in eyeglasses, is 1.52.
The index of refraction of a particular plastic lens is 1.76. Light bends more
in the... - 🧠 ANSWER ✔✔Plastic lens
The image of the "infinitely-far-away" Sun produced by a converging lens
appears... - 🧠 ANSWER ✔✔At the focal point
A "pinhole camera" has no lens. The tiny pinhole opening ensures that rays
of light from different parts of an object... - 🧠 ANSWER ✔✔Don't overlap
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
