Light - Reflection & Refraction online mcq quiz
Light - Reflection & Refraction boostup points
Image formation by a concave mirror for different positions of the object
|
Position of object |
Position of image |
Size of image |
Nature of image |
|
At infinity |
At focus F |
Highly diminished, point – sized |
Real and inverted |
|
Beyond C |
Between F and C |
Diminished |
Real and inverted |
|
At C |
At C |
Same size |
Real and inverted |
|
Between C and F |
Beyond C |
Enlarge |
Real and inverted |
|
At F |
At infinity |
Highly enlarged |
Real and inverted |
|
Between P and F |
Behind mirror |
Enlarged |
Virtual and erect |
Nature, position and relative size of the image formed by a convex mirror:
|
Position of object |
Position of image |
Size of image |
Nature of image |
|
At infinity |
At focus F behind the mirror |
Highly diminished, point sized |
Virtual and erect |
|
Between infinity and pole of the mirror |
Between P andByjus.comF behind the mirror |
Diminished |
Virtual and erect |
Mirror Formula 1/v + 1/ u = 1/f
Magnification produced by mirror: m = ℎ𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑖𝑚𝑎𝑔𝑒 (ℎ') / ℎ𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑜𝑏𝑗𝑒𝑐𝑡(ℎ)
Snell’s law of refraction:
If i is the angle of incidence and r is the angle of refraction, then, sin 𝑖 / sin 𝑟 = constant
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