octual
hagnifying
irror from
ray.
tement.
F
F
is laterally
G. Answer these questions.
1. Give common uses of convex lenses.
2. Why is a convex mirror used as a rear view
mirror?
3. What is meant by lateral inversion in a plane
mirror?
4. State the characteristics of the image formed
by a plane mirror.
5. Write the rules to draw the ray diagrams for
concave mirrors. Represent each rule with the
help of a diagram
6. A person finds difficulty in viewing distant
objects, while the nearby objects are clearly
visible to him. Which type of lens should he
use in his spectacles?
7. Describe an activity to show that white light is
colours.
pes. F
light from
Answers
Explanation:
octual
hagnifying
irror from
ray.
tement.
F
F
is laterally
G. Answer these questions.
1. Give common uses of convex lenses.
2. Why is a convex mirror used as a rear view
mirror?
3. What is meant by lateral inversion in a plane
mirror?
4. State the characteristics of the image formed
by a plane mirror.
5. Write the rules to draw the ray diagrams for
concave mirrors. Represent each rule with the
help of a diagram
6. A person finds difficulty in viewing distant
objects, while the nearby objects are clearly
visible to him. Which type of lens should he
use in his spectacles?
7. Describe an activity to show that white light is
colours.
pes. F
light from
Answer:
1) convex lenses are used to for far sightedness eyes to see more clearly
2) it used as a rear veiw mirror because it gives a large image in a small mirror
3)you see the left side as right side and right side as left
4) laterally inverted
both image and object are of the same size
distance between image and mirror is same as the object and mirror
they form virtual and erect images
5) when a ray passes through the focus, the image forms at infinity
when a ray passes parallel to the principal axis it goes through focus
when a ray passes through C, it forms goes through C itself
6) Concave lense
7) take a prism and place it on a flat surface, point a white light through the side of the prism and you will observe that it comes out as 7 different colours due to dispersion and because the wavelength of each colour in the while light is different proving that white light consists of different colors