Question

Q1.Name the colours include in the composition of sunlight.

Q2.Name the type of lens which diverges a beam of parallel rays of light.

Q3.Name the mirror used as side mirrors in scooters.

Q4.Fill in the blanks
1.………………….. lens is also known as a magnifying glass.
2.A prism splits light into ………………….. colours.
3.The inner surface of a steel spoon acts as a ………………….. mirror.

Q5.True/ False
1.The image formed in a plane mirror is erect, enlarged and virtual.
2.An object can be seen only if it emits light.
3.A convex lens always produces a real image.

Q6.MCQ
1.Which of the following will you prefer to use while reading small letters found in Dictctionary?
a)convex lens
b) convex mirror
c)concave lens
d)both a or b​

Answer 1

Answer: The answers are as follows:

2. Concave

3. Convex Mirror

4. a) Convex

b) 7 colors

c) Concave mirror

5. a) False

b) False

c) False

6. Convex

Answer 2

Explanation:

Q1) White light is called as white because it consists of seven colors. The sunlight splits into seven colors namely violet, indigo, blue, green, orange, and red. We usually call it as VIBGYOR.

Q2) Concave lens is opposite to convex lens. The parallel beam of light rays is diverged after passing through it. Concave lens also has two foci.

Q3) Convex mirrors are used as side mirrors in scooters because convex mirrors can form images of objects spread over a large area. This helps the drivers to see traffic behind them.

Q4) hand lens is also known as a magnifying glass

2)visible light

3)The inner surface of a steel spoon acts as a Concave mirror.

Q5)

1) false

2)false.

3)false

Q6) convex lence

Hope it helps you