Question

(b) It occurs when white light passes through
(c) It can be caused by the refraction of light
(d) Rainbows form due to the dispersion of
2. When a ray of light parallel to the principal
axis is incident on a concave mirror, the
Swer Questions
a prism.
1. What is the refraction of light?
2. Define refractive index of a medium
but not by the reflection of light.
3. What are real and virtual images? Give one
example of each
white light by droplets of water,
4. What are spherical mirrors?
5. What are the characteristics of an image
formed by a convex mirror?
reflected ray
6. If an object is placed at the centre of curvature
(a) passes through
of a concave mirror, where will its image be
(b) passes through
formed?
(c) passes midway between Pandy
7. If an object is placed at the focus of a concave
(d) retraces its path
mirror, where will its image be formed?
8. What is the relation between the focal length
3. The image formed by a concave mirrors
and the radius of curvature of a spherical
larger in size than the object
. Which of the
statements cannot be correct?
mirror?
9. What is a spectrum?
(a) The object lies between the focus and the
pole of the mirror
Long-Answer Questions
(b) The object lies between the focus and the
centre of curvature of the mirror
1. What are the laws of refraction?
(c) The object and the image lie on the same
2. What is dispersion? Why does white light
side of the principal axis.
split into its constituent colours when it
(d) The object is beyond the centre of
passes through a prism? Give an example of
curvature of the mirror
dispersion in nature.
3. What do you understand by the principal
4. The image formed by a convex mirror is
axis, radius of curvature, focal length, centre
(a) inverted
(b) magnified
of curvature, and focus of a spherical mirror?
(c) virtual
(d) real
You can use a diagram to explain.
5. Which of the following is not correct with
4. Use a diagram to show what happens when
a ray of light passes through a rectangular
respect to all spherical mirrors?
slab of glass
(a) The pole lies on the principal axis,
(b) The focal length is half of the radius of
Objective Questions
curvature
Choose the correct option.
(c) Both real and virtual images can be
formed by them
1. Which of the following statements regarding
dispersion is not correct?
(d) Light rays moving towards or passing
through the centre of curvature retrace
(a) It occurs whenever light is refracted.
their path after reflection
Concorcoranas​

Answer 1

Answer:

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Answer 2

Answer:

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