Suppose that the lower half of the concave mirror’s reflecting surface in the given figure is covered with an opaque (non-reflective) material. What effect will this have on the image of an object placed in front of the mirror?

 1 the image will show only half of the object 2 the image will show the whole of the object 3 the intensity of the image will be low 4 both (2) and (3)
Subtopic: Â Reflection at Spherical Surface |
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A mobile phone lies along the principal axis of a concave mirror, as shown in the figure. Then,

 1 the magnification is not uniform due to the length of the object along the principal axis. 2 the distortion of the image depends on the location of the phone with respect to the mirror. 3 both (1) and (2) 4 none of these

Subtopic: Â Reflection at Spherical Surface |
Â 85%
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An object is placed at $$10$$ cm in front of a concave mirror with a radius of curvature of $$15$$ cm. The magnification of the image is:
1. $$-3$$
2. $$3$$
3. $$1$$
4. $$-1$$

Subtopic: Â Reflection at Spherical Surface |
Â 74%
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An object is placed at $$5$$ cm in front of a concave mirror with a radius of curvature of $$15$$ cm. The nature of the image is:
1. magnified, real, and inverted
2. magnified, virtual, and erect
3. magnified, real, and erect
4. none of these

Subtopic: Â Reflection at Spherical Surface |
Â 73%
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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of $$R= 2~\text{m}$$. If the jogger is running at a speed of $$5~\text{m/s}$$, how fast does the image of the jogger appear to move when the jogger is $$39~\text{m}$$ away?
1. $$5~\text{m/s}$$

2. $$\frac{1}{60}~\text{m/s}$$
3. $$\frac{1}{280}~\text{m/s}$$
4. $$10~\text{m/s}$$

Subtopic: Â Reflection at Spherical Surface |
Â 56%
From NCERT
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