EWT | Academic Question

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Question (21)
QN002411
A concave mirror forms an image that is three times larger than the object. The image is definitely not:
  • (A) Enlarged
  • (B) Formed by a concave mirror
  • (C) Diminished
  • (D) Formed when object is close to mirror

Correct Answer: C
Explanation:

An image three times larger than the object is enlarged, not diminished.

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Question (22)
QN002412
A student stands before a concave mirror and moves backward. Which sequence best describes the image?
  • (A) Enlarged erect → enlarged inverted → smaller inverted
  • (B) Smaller erect → enlarged erect → inverted
  • (C) Same size → enlarged → invisible
  • (D) Smaller inverted → larger inverted → erect

Correct Answer: A
Explanation:

A concave mirror forms an erect enlarged image when the object is close, then an inverted enlarged image, and finally an inverted diminished image as the object moves farther away.

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Question (23)
QN002413
The image formed by a convex mirror is always:
  • (A) Virtual, erect and diminished
  • (B) Real, inverted and enlarged
  • (C) Real and erect
  • (D) Virtual and enlarged

Correct Answer: A
Explanation:

A convex mirror always forms a virtual, erect and diminished image.

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Question (24)
QN002414
Why are convex mirrors preferred in stores for surveillance?
  • (A) They enlarge objects greatly
  • (B) They produce inverted images
  • (C) They cover a larger area of view
  • (D) They focus light strongly

Correct Answer: C
Explanation:

Convex mirrors provide a wide field of view, helping monitor larger areas.

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Question (25)
QN002415
Which image property is common to plane, concave and convex mirrors?
  • (A) Same-sized image
  • (B) Enlarged image
  • (C) Lateral inversion
  • (D) Inverted image

Correct Answer: C
Explanation:

All mirrors show lateral inversion of images.

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Question (26)
QN002416
A mirror forms an image that becomes smaller as the object moves away but remains upright. The mirror is:
  • (A) Plane mirror
  • (B) Convex mirror
  • (C) Concave mirror
  • (D) Cannot be determined

Correct Answer: B
Explanation:

Convex mirrors always form erect images that become smaller as the object moves away.

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Question (27)
QN002417
A science centre mirror shows a large upright face when viewed nearby and an upside-down face when viewed farther away. This mirror is:
  • (A) Plane mirror
  • (B) Convex mirror
  • (C) Concave mirror
  • (D) Transparent mirror

Correct Answer: C
Explanation:

A concave mirror can form both erect and inverted images depending on distance.

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Question (28)
QN002418
Which mirror would be most suitable for making a person appear taller and larger while standing close to it?
  • (A) Plane mirror
  • (B) Convex mirror
  • (C) Concave mirror
  • (D) Rear-view mirror

Correct Answer: C
Explanation:

A concave mirror forms an enlarged erect image when the object is close.

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Question (29)
QN002419
If an object is shifted away from a concave mirror and the image changes from enlarged to diminished, the image must have become:
  • (A) Erect throughout
  • (B) Inverted at some stage
  • (C) Invisible throughout
  • (D) Same size throughout

Correct Answer: B
Explanation:

A concave mirror changes from erect enlarged to inverted images as distance increases.

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Question (30)
QN002420
Which statement about convex mirrors is correct?
  • (A) Image size increases as object moves away
  • (B) Image may become inverted
  • (C) Image is always diminished and erect
  • (D) Image remains same size

Correct Answer: C
Explanation:

A convex mirror always forms an erect and diminished image.

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