Light questions | form one Physics

The only light reflected by both yellow and blue pigments is

1. Green
2. White
3. Red
4. Cyan
5. Indigo.

(i) State the laws of reflection of light.
(ii) Give two examples which illustrate that light travels in a straight line.

Explain the reason for the following:
(i) Light and heat from the sun disappear during the total eclipse of the sun.
(ii) Radio telescope uses a parabolic metal reflector.

A typist uses a new carbon paper under her top typing paper for making a copy of a letter. When she holds the carbon paper close to a plane mirror she can read the letter. This happens because the mirror
A forms an image of the same size
B produces an inverted image
C produces a laterally inverted image
D forms a virtual image
E forms an image behind the mirror
 

Which one is a characteristic of a plane mirror?

1. It forms an image which is real and opaque
2. It forms an image which is larger than the object
3. It forms an image which is real and laterally inverted
4. It forms an image which has the same size as the object
5. It forms an image which is small in size than the object

If the angle between two plane mirrors is 60°, what will be the number of
images?
A.  2    B. 3  C. 4   D. 5

How can a real image be distinguished from a virtual image?
A Real image is inverted while virtual image is upright
B Real image is upright while virtual image is inverted
C Virtual image is formed by a convergent rays while real image is formed by divergent rays
D Real image is formed by a convergent rays while virtual image is by divergent rays

Objects which emit light when they are hot are called ____

Light is a form of energy. State any two characteristics of it which can be distinguished from other forms of energy.

With the aid of a diagram, state the laws of reflection.