EWT | Academic Question

Questions
Question (11)
QN002401
A vehicle side-view mirror forms an image that is 1/3 the size of the object. The image is most likely:
  • (A) Inverted
  • (B) Same size
  • (C) Enlarged
  • (D) Diminished and erect

Correct Answer: D
Explanation:

Side-view mirrors are convex mirrors and form erect diminished images.

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Question (12)
QN002402
If an object is moved from 5 cm to 20 cm away from a convex mirror, the image size will:
  • (A) Increase continuously
  • (B) Remain unchanged
  • (C) Decrease slightly
  • (D) Become inverted

Correct Answer: C
Explanation:

Increasing object distance decreases the image size in a convex mirror.

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Question (13)
QN002403
Which mirror is most suitable for observing a wider area behind a vehicle?
  • (A) Plane mirror
  • (B) Concave mirror
  • (C) Convex mirror
  • (D) Any spherical mirror

Correct Answer: C
Explanation:

Convex mirrors provide a wider field of view.

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Question (14)
QN002404
A student wants a mirror that never forms an inverted image. Which mirror should be selected?
  • (A) Concave mirror only
  • (B) Convex mirror only
  • (C) Plane mirror only
  • (D) Both plane and convex mirrors

Correct Answer: D
Explanation:

Plane and convex mirrors always form erect images.

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Question (15)
QN002405
Which of the following image characteristics can be shown by a concave mirror?
  • (A) Only erect and enlarged
  • (B) Only inverted and diminished
  • (C) Erect enlarged, inverted enlarged, inverted diminished
  • (D) Only erect and diminished

Correct Answer: C
Explanation:

A concave mirror can form different types of images depending on object position.

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Question (16)
QN002406
A mirror forms an upright image that is half the size of the object. The mirror cannot be:
  • (A) Convex mirror
  • (B) Plane mirror
  • (C) Spherical mirror
  • (D) Side-view mirror

Correct Answer: B
Explanation:

A plane mirror always forms an image of the same size as the object.

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Question (17)
QN002407
A child sees an upside-down image of herself in a curved mirror. The mirror is most likely:
  • (A) Plane mirror
  • (B) Convex mirror
  • (C) Concave mirror with object farther away
  • (D) Glass sheet

Correct Answer: C
Explanation:

A concave mirror forms inverted images when the object is beyond the focal length.

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Question (18)
QN002408
Which observation helps identify a convex mirror?
  • (A) Image sometimes erect and sometimes inverted
  • (B) Image always same size
  • (C) Image always erect and smaller
  • (D) Image always enlarged

Correct Answer: C
Explanation:

A convex mirror always forms erect diminished images.

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Question (19)
QN002409
If the image formed by a mirror is erect and enlarged, the mirror must be:
  • (A) Convex mirror
  • (B) Plane mirror
  • (C) Concave mirror with object close to it
  • (D) Any mirror

Correct Answer: C
Explanation:

Only a concave mirror can produce an erect enlarged image when the object is close.

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Question (20)
QN002410
Which mirror is used as a road safety mirror at sharp bends?
  • (A) Plane mirror
  • (B) Convex mirror
  • (C) Concave mirror
  • (D) Polished steel sheet

Correct Answer: B
Explanation:

Convex mirrors are used at road bends because they provide a wider field of view.

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