|
An object 4 cm in height, is placed at 15 cm in front of concave mirror of focal length 10 cm
|
|
1
|
1608
|
April 3, 2019
|
|
A 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm
|
|
1
|
8149
|
October 22, 2016
|
|
An object 5 cm in length
|
|
1
|
2040
|
October 22, 2016
|
|
A concave lens of focal length 15 cm forms an image 10 cm from the lens
|
|
1
|
3406
|
October 22, 2016
|
|
An object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm
|
|
1
|
9859
|
October 22, 2016
|
|
A convex lens has a focal length of 25 cm
|
|
1
|
3964
|
October 22, 2016
|
|
A 5 cm tall object is placed perpendicular to the principal axis
|
|
1
|
13515
|
October 22, 2016
|
|
An object 3.0 cm high is placed perpendicular to the principal axis
|
|
1
|
9158
|
October 22, 2016
|
|
Complete the ray diagram
|
|
1
|
2847
|
October 22, 2016
|
|
Draw a ray diagram to locate the position
|
|
1
|
3581
|
October 22, 2016
|
|
What do you conclude from this activity ? explain
|
|
0
|
4662
|
October 22, 2016
|
|
If Yes/Not, why?
|
|
1
|
787
|
October 22, 2016
|
|
What do you mean by ah object at infinity ? What type of rays fall on the lens?
|
|
0
|
4997
|
October 22, 2016
|
|
What difference do you notice in refracted rays between the following figures?
|
|
1
|
1295
|
October 22, 2016
|
|
What happens to ray that moves along the principal axis or moves through the centre of curvature?
|
|
0
|
1443
|
October 22, 2016
|
|
Why do you see a diminished image of the arrow?
|
|
0
|
1493
|
October 22, 2016
|
|
Write an activity to know the characteristics of image due to convex lens at various distances
|
|
0
|
3093
|
October 22, 2016
|
|
Explain ‘Refraction of light at a curved surface’ through an activity
|
|
0
|
3423
|
October 22, 2016
|
|
Give the sign conventions for lenses with regard to the object and image distance
|
|
0
|
916
|
October 22, 2016
|
|
What happens to be image formed by a convex lens if its lower part is blackened?
|
|
0
|
3048
|
October 22, 2016
|
|
What do you see
|
|
1
|
859
|
October 22, 2016
|
|
Sudha finds out that the sharp image
|
|
1
|
2947
|
October 22, 2016
|
|
A convex lens of the focal length 20 cm can produce a magnified virtual as well as real image
|
|
1
|
1454
|
October 22, 2016
|
|
Give conventions used in lenses
|
|
0
|
680
|
October 22, 2016
|
|
State the type of lens used as a magnifying glass
|
|
1
|
3133
|
October 22, 2016
|
|
A concave mirror and a convex lens are held in water
|
|
1
|
1722
|
October 22, 2016
|
|
How will you decide whether a given piece of glass is a convex lens, concave lens or a plane plate?
|
|
0
|
968
|
October 22, 2016
|
|
The ray diagram given below illustrates
|
|
1
|
1116
|
October 22, 2016
|
|
You are given a convex lens of the focal length 10 cm
|
|
1
|
3457
|
October 22, 2016
|
|
Write characteristics of image formed by a concave lens at various distances
|
|
0
|
2239
|
October 22, 2016
|