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For driving a car what type of mirror would you prefer to see the traffic at your back and why?
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0
|
3665
|
September 24, 2016
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|
What is the difference between virtual images produced by concave, plane and convex mirrors?
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0
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7661
|
September 24, 2016
|
|
How will you distinguish, without touching, between a plane mirror, a convex mirror and a concave mirror?
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0
|
7706
|
September 24, 2016
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|
A converging lens forms a real and inverted image of an object at a distance of 100 cm
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1
|
6674
|
September 24, 2016
|
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Write relation between u, v, f for lens and for mirrors
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1
|
20071
|
September 24, 2016
|
|
Draw a ray diagram in each of the following cases to show the position and nature of the image formed when object is placed :
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1
|
7043
|
September 24, 2016
|
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Write one use of concave mirror as well as convex mirror
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1
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2374
|
September 24, 2016
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The refractive index of diamond is 2.42. What is the meaning of this statement?
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1
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6528
|
September 24, 2016
|
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Define principal focus of a concave mirror
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1
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5158
|
September 24, 2016
|
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Describe an activity to find the approximate value of focal length of a concave mirror
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1
|
7562
|
September 24, 2016
|
|
Which lens can be used as a magnifying glass?
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1
|
3920
|
September 24, 2016
|
|
Under what condition, a concave mirror produces a virtual and magnified image?
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1
|
7958
|
September 24, 2016
|
|
Define optical centre of a spherical lens
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1
|
28228
|
September 24, 2016
|
|
Define 1 dioptre of power. Find the focal length of a lens of power - 2.0 D
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1
|
6307
|
September 24, 2016
|
|
For the given data showing object distance and focal length of three concave mirrors, answer the following questions :
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1
|
12138
|
September 24, 2016
|
|
A thin converging lens forms a :
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1
|
16953
|
September 24, 2016
|
|
Name the type of mirror used in the following:
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1
|
8310
|
September 24, 2016
|
|
Define real image of an object
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1
|
7079
|
September 24, 2016
|
|
State the relation between object distance,
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|
1
|
6649
|
September 24, 2016
|
|
What is lateral shift? Explain with the help of a diagram
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|
0
|
16910
|
September 24, 2016
|
|
Draw a labelled ray diagram to locate the image of an object formed by a convex lens of focal length 20 cm when the object is placed 30 cm away from the lens
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|
0
|
13657
|
September 24, 2016
|
|
Draw a ray diagram to show the path of the refracted ray in each of the following cases
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|
1
|
15808
|
September 24, 2016
|
|
Write the type of mirror he should use
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|
1
|
1353
|
September 24, 2016
|
|
State Snell's law of refraction
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1
|
8056
|
September 24, 2016
|
|
A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm
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|
1
|
18759
|
September 24, 2016
|
|
Water has refractive index 1.33 and alcohol has refractive index 1.36
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|
1
|
20897
|
September 24, 2016
|
|
A ray of light falls normally on a face of a glass slab
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|
1
|
3493
|
September 24, 2016
|
|
Define power of a lens and write its SI unit
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|
1
|
11395
|
September 24, 2016
|
|
Which set of observations is incorrect and why?
|
|
1
|
7129
|
September 24, 2016
|
|
For the same angle of incidence 45°, the angle of refraction in two transparent media;
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|
1
|
12415
|
September 24, 2016
|