Q-Name the mirror which has bulged in the center and is narrow at the ends?
A- Convex mirror
Q-Name the
mirror which has a depression in the center and is thick at the edges?
A-Concave mirror
Q-Which type
of lens is used as magnifying glass?
A-Convex lens
Q-Which type
of lens is used in specs to view distant objects clearly?
A-Concave lens
Q-Which type
of lens is used to make fire with it during daytime?
A-
Convex
lens
Q-Which type
of mirror is used as a reflector in a torch light?
A-
Concave
mirror
Q- Anything
viewed in a mirror or through a lens is called?
A-
Image
Q-An image
inverting from left to right and right to left only is called?
A-
Lateral
inversion
Q-An object
made from transparent material which has two or spherical surfaces?
A- Lens
A- Lens
Q-A smooth,
highly polished and reflecting surface is called?
A- Mirror
A- Mirror
Q-An arc
of seven colors of light formed in sky before or after rain in the direction
opposite to the position of the sun?
A-Rainbow
Q-An image
which can be obtained with a screen is called?
A-Real image
Q-An image
in a mirror or formed by a lens, but not obtained on a screen is called?
A-Virtual image
Q-Band of
colors as in a rainbow is called?
A-Spectrum
Q-What is
the ray hitting the surface called?
A-Incident ray
Q-Write short
note on reflection of light?
A- When the light hits a place shiny surface like a mirror and it bounces off the surface is called the reflection of light.
A- When the light hits a place shiny surface like a mirror and it bounces off the surface is called the reflection of light.
Q-Name the
phenomenon which results in the formation of the rainbow?
A- Dispersion of light
A- Dispersion of light
Q-When the
rainbow is formed?
A-Rainbow is
formed during forenoon or afternoon.
Q-Why rainbow
is not formed during noon?
A- The rainbow is not formed in noon because in the noon earth is in the direction opposite to sun, hence the rainbow on earth is not seen.
A- The rainbow is not formed in noon because in the noon earth is in the direction opposite to sun, hence the rainbow on earth is not seen.
Q-Name the
seven colors of the rainbow?
A- Violet, indigo, blue, green, yellow, orange and red.
A- Violet, indigo, blue, green, yellow, orange and red.
Q-What kind
of image is formed when a convex lens is placed between the screen and the
source of light?
A-An inverted, real and actual image is formed.
Q-What kind
of image is formed when a concave lens is held between the screen and source of
light?
A-No image
is formed.
Q- What things
do people of weak eyesight use?
A- Convex lens for reading purpose.
A- Convex lens for reading purpose.
Concave lens for viewing distant
objects Clearly.
Q- Name the mirror that forms a virtual image
for object?
A- Yes we can. We can change the path of light by reflecting it from a shiny and polished Surface.
Q- Explain the nature of image made in a plane mirror?
A- Erect
Q-Why concave mirror called a converging mirror?
Q- Mention the uses of concave mirror?
A- 1) concave mirrors are used by eye Specialists and dentists.
A- 1) Convex mirror is used as a rear view mirror in vehicles.
Q- Mention the uses of Plane Mirror?
A- It is used for optical testing
Q- Mention the uses of lenses?
A- Convex lens are used as Magnifying glass
Q- Which mirror is called a divergent mirror?
A- A convex mirror.
A -Convex Mirror.
Q2.
Can u change path of light? If yes then how?
A- Yes we can. We can change the path of light by reflecting it from a shiny and polished Surface.
Q- Explain the nature of image made in a plane mirror?
A- Erect
Virtual
Same
size of the image
At same distance from the mirror as it’s
in front of the object.
Q- What type of mirror is there in the inner side and outer side of the Spoon?
A- In Inner surface its Concave mirror and in
the outer surface its concave mirror in the spoon.
Q-Why concave mirror called a converging mirror?
A- Concave
mirror is
called a converging mirror because parallel beam of lights fall on the mirror
they Converge at a point name as focus.
Q- Why
convex mirror is called a diverging
mirror?
A- Convex mirror is called diverging mirror because parallel beam of
lights fall on it diverge or bend outward the light after reflection.
Q- Mention the uses of concave mirror?
A- 1) concave mirrors are used by eye Specialists and dentists.
2.)
It is used as shaving mirror.
3) It
is used for makeup.
4) It is used in car headlights and torches.
4) It is used in car headlights and torches.
Q11.
Mention the uses of Convex mirror?
A- 1) Convex mirror is used as a rear view mirror in vehicles.
2) It
is used in metro stations to have a full view of trains.
Q- Mention the uses of Plane Mirror?
A- It is used for optical testing
It is used in telescope.
Q- Mention the uses of lenses?
A- Convex lens are used as Magnifying glass
Concave
lens are used to see far off objects
clearly.
Convex lens are used by People having weak eyesight.
Convex lens are used by People having weak eyesight.
Q- Explain how the the rainbow is formed?
A- After rainfall when sun rays passes through suspended raindrops it splits into 7colours and a rainbow is formed.
A- After rainfall when sun rays passes through suspended raindrops it splits into 7colours and a rainbow is formed.
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