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Science
10th
grade
Reflection : Mirror Formula | Light : Reflection and Refraction | Assessment | English | Grade 10
4 questions
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- 1. Multiple Choice
Based on New Cartesian Sign Convention, which of the following is not true?
Distances perpendicular to and above to the principal axis are taken as positive.
Distances parallel to the principal axis and right to the origin are taken as positive.
The object is placed on the left side of the mirror and that implies that the light comes from the opposite side.
All the distances parallel to the principal axis are measured from the pole of the mirror.
- 2. Multiple Choice
A concave mirror having a focal length 30 cm forms a virtual image at the distance of 15 cm from the pole. For this to happen, the object must be placed _______ from the pole.
30 cm
15 cm
10 cm
45 cm
- 3. Multiple Choice
A convex mirror producing a magnification of 1.2. If the object is placed at a distance of 10 cm from the pole what would be the position of the image?
12 cm in front of the mirror
12 cm behind the mirror
24 cm behind the mirror
None of these
- 4. Multiple Choice
Choose the correct statement for concave mirrors?
Radius of Curvature is half of the focal length.
The rays of light coming from the infinity are appear to diverge from the focus of the mirror.
Concave mirrors can form diminished and enlarged images based on the position of the object.
Concave mirrors always have a positive focal length.
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