11-light Flashcards
1
Q
The speed of light-
A
3 × 10^8
2
Q
The speed of sound
A
343 m/s
3
Q
What are light
A
Electromagnetic wave
4
Q
Plane mirror formed
A
Erect ,virtual,same size
5
Q
Which mirror used in car mirror
A
Convex
6
Q
Which mirror used in car mirror
A
Convex
7
Q
Mirror used by dentist
A
Concave
8
Q
Where are used in torch and headlight
A
Concave
9
Q
Convex lens is ____
Concave lens i ___
A
Converging
Diverging
10
Q
Image formed by convex lens is
A
Real and inverted
11
Q
Image formed by concave lens is
A
Virtual erect and diminished image
12
Q
Concave lens used to correct
A
Hypermyiopia
13
Q
Concave lens used to correct
A
Myopia
14
Q
Which lens used in microscope
A
Convex len
15
Q
Lens in magnifying glass
A
Convex
