5a Light I

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Question 1 of 9

1. Question
1 point(s)
Which of the following diagrams correctly illustrate the laws of reflection of the light ray on the curved mirrors?
- I.
- II.
- III.
- IV.
Correct

Incorrect
Question 2 of 9

2. Question
1 point(s)
Which of the following is not the application of convex mirror?
- Wide-angle mirror of the car side mirrors
- Mirrors on a sharp bend corner
- Mirror in a reflection telescope
- Security mirrors in a shop
Correct

Incorrect
Question 3 of 9

3. Question
1 point(s)
The image formed by a convex mirror is always
- Upright, virtual and magnified
- Upright, virtual and diminished
- Inverted, real and diminished
- Inverted, real and magnified
Correct

Incorrect
Question 4 of 9

4. Question
1 point(s)
The image formed by a concave mirror is observed to be the same size as the object. The object is placed
- At the center of the concave mirror
- Between the curve center and the focus point of the concave mirror
- At the focus point of the mirror
- Between the focus point and the pole of the concave mirror.
Correct

Incorrect
Question 5 of 9

5. Question
1 point(s)
The focal length of a concave mirror is 15cm. What is the characteristic of the image formed if an object is placed 10cm from the mirror?
- I. Real
- II. Virtual
- III. Upright
- IV. Inverted
- V. Magnified
- VI. Diminish
Correct

Incorrect
Question 6 of 9

6. Question
1 point(s)
The figure shows an observer standing 2m in front of a mirror. If there is a pole behind the observer, 4m away from the mirror, then how far is the image of the pole from the observer?
- 2m
- 3m
- 4m
- 6m
Correct

Incorrect
Question 7 of 9

7. Question
1 point(s)
A boy is at a point 2m in front of a big flat mirror. If the boy moves away from the mirror with a velocity of 6ms⁻¹, at a direction perpendicular to the surface of the mirror, what will be the distance of the boy from his image in the mirror after 5 seconds?
- 64m
- 60m
- 30m
- 32m
Correct

Incorrect
Question 8 of 9

8. Question
1 point(s)
A mirror is tilted at an angle of 35° to a bench. A ray of light is directed so that it hits the mirror at an angle of 15° to the surface of the mirror. What is the angle of reflection?
- 15°
- 50°
- 35°
- 75°
Correct

Incorrect
Question 9 of 9

9. Question
1 point(s)
A man of height 1.6m stands in front of a mirror. Find the minimum vertical length (l) of the mirror so that the man can see the full image of himself.
- 0.5m
- 0.8m
- 1.0m
- 1.6m
Correct

Incorrect