Physics

Light and Mirrors

458 Questions

Light and mirrors questions cover the principles of reflection, image formation, and mirror magnification. Concepts include the properties of plane mirrors, the uses of concave mirrors in solar devices, and the behavior of light rays. These fundamentals are essential general science topics in major competitive examinations.

Plane mirror propertiesConcave mirror applicationsMirror magnification formulaLight reflection lawsImage formation

Light and Mirrors Questions

Multiple choice chemistry composition of matter physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

A mirror is:

  1. opaque

  2. transparent

  3. translucent

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A silver glass mirror is an ordinary mirror, coated on its back surface with silver, which produces images by reflection. This kind of glass mirror is produced by coating a silver, copper film and two or more layers of waterproof paint on the back surface of float glass, which perfectly resists acid and moisture.

As it reflect all the light falling on it and we can see through it so it is a opaque.

Multiple choice

Which type of structure would the Dunoon Observer most likely use?

  1. Tall

  2. Flat

  3. Entrpreneurial

  4. Matrix
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Dunoon Observer is a small local newspaper, and small businesses typically use an entrepreneurial organizational structure where decision-making is highly centralized around the owner. This structure allows for quick decisions but can overburden the owner as the business grows.

Multiple choice

A refracting Telescope makes an image...

  1. Bigger

  2. Smaller

  3. Squarer...Yeah, that's Totally a word.

  4. Broader
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary purpose of any optical telescope, including a refracting telescope, is to gather light and magnify the image of distant objects, making them appear larger and more detailed. This magnification allows observers to see fine details of celestial bodies that are invisible to the naked eye.

Multiple choice

What are the kinds of Telescopes

  1. Retracting :: Reflecting

  2. Reflipping :: Retracting

  3. Refracting :: Reflecting

  4. Whipping :: Nae Nae-ing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The two fundamental types of optical telescopes are refracting telescopes, which use lenses to bend and focus light, and reflecting telescopes, which use mirrors to reflect and focus light. Other options contain made-up or humorous terms that do not represent scientific classifications.

Multiple choice

Silver is used for making

  1. Jewellary

  2. Mirror

  3. Both1 and2

  4. Non of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Silver has multiple valuable uses that make it precious. It is extensively used in jewelry due to its luster and workability. Silver is also the best reflector of visible light, making it ideal for mirrors. Both applications are major uses of silver, though its reflectivity makes mirrors the more technically significant use.

Multiple choice

What are the three types of mirrors?

  1. Concave, convex, parallel

  2. Concave, convex, plain

  3. Acute, obtuse, right

  4. Concave, convex, plane
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The three main types of mirrors based on their surface geometry are plane mirrors (flat), concave mirrors (curved inward), and convex mirrors (curved outward).

Multiple choice physics measurements and experimentation measuring distance of celestial bodies unconventional units of measurements units of mass

 _______________displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.

  1. Echo

  2. Parallax

  3. Triangulation

  4. None of These
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parallax displacement or difference in the apparent position of an object vied along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.

Multiple choice physics observing space: telescopes space research and satellites space travel space exploration and forms of light

Which of the following is true for a telescope?

  1. Final image is real and inverted.

  2. It increases the size of the object.

  3. It increases the angle subtended by image at the eye of the observer.

  4. Smaller telescopes are more powerful
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Telescope increases the visual angle of an object considerably and hence it allows to study the details of the objects carefully. The final image is actually much smaller than the object itself. 

Multiple choice physics observing space: telescopes space research and satellites space travel space exploration and forms of light

A telescope gives an .............. (inverted / erect) and ........ (enlarged/diminished) image of a distant object. Choose the correct alternative.

  1. Inverted, diminished

  2. Inverted, enlarged

  3. Erect, diminished

  4. Erect, enlarged
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Telescopes are  used to obtain an enlarged image of a distant object, it uses a curved lens or mirror to collect light from distant objects and to focus that light on an image and creates a brighter and sharper image. The focused image formed by the objective lens of a telescope is magnified by a smaller second lens called an eyepiece.
Multiple choice physics observing space: telescopes space research and satellites space travel space exploration and forms of light

A telescope:

  1. converges light

  2. diverges light

  3. reflects light

  4. refracts light
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Telescope comprises of two convex lenses. 

Lens farther from eye behaves as converging lens and forms image at focal point. 
Lens nearer to eye behaves as diverging lens and forms a virtual image.
Hence, overall effect is diverging.

Multiple choice physics observing space: telescopes space research and satellites space travel space exploration and forms of light

The final image formed by an astronomical telescope is:

  1. real and erect.

  2. virtual and erect.

  3. real and inverted.

  4. virtual and inverted.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The objective lens produces a real, inverted image and the eyepiece acts as a simple magnifier and does not re-invert and produces a virtual image. So overall the image is inverted and virtual.