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Answers
answer:they are done for you okay va
Answer:
1. A)
2. B)
3. B)
4. A)
5. D)
6. C)
7. A)
8. D)
9. A)
10. A)
Explanation:
1. All the distances are measured from pole of the mirror as origin
2. All the distances measured in the direction opposite to that of the incident rays are negative.
3. the distances measured below the principal axis are taken as negative.
4. If the rotation is counterclockwise, the angle has a positive measure.
5. The magnification equation states that M = Hi/Ho = - Di/Do, where M is the magnification, Hi is the height of the image, Ho is the height of the object, Di is the distance from the lens to the image and Do is the distance of the object to the lens. The minus sign signifies the fact that the image will be inverted.
6. If the lower half of the mirror is covered with an opaque card, the effect would be. to make the upper half of the image disappear.
7. If the given spherical mirror has the magnification + 2 then we can understand that the the image formed is virtual and erect.
8. The minimum distance between an object and its real image in the case of a concave mirror is Zero.
9. Convex Mirrors act like Concave lenses, both reduce the image, providing a larger field-of-view.
10. Convex mirror is also called diverging mirror as it diverges the beam of light falling on it. It ia for this purpose that it is used in street lamps as it would diverge the light rays and hence spread the light so that visibility increases.