Light

The speed of light in Vacuum is

• 3.0 X 10⁸ m/s

• 3.0 X 10⁸ Km/hr

• 3.0 X 10¹⁰ Km/hr

• 330 m/s

Which of these describes how light travels through an empty space?

• It travels straight but may change direction to avoid objects.
• It changes direction often even if there are no objects. 
• It comes to a stop after it travels a certain distance. 
• It travels in a straight line without stopping. 

The speed of light is the same in all media

• True

• False

Light travels the fastest in?

• Glass (solids)

• Water (Liquids)

• Air (Gas)

• Has the same speed of 3.0 X 10⁸ m/s in all media

The following shows that

• Light can form shadow

• Light travels in a straight line

• Light can pass through thin solids like papers

The path along which light travels is called ray?

• True

• False

Which of the following is true

• A shows a ray of light

• B is a divergent beam of light

• C shows how light travels from a light source

Which of these is a convergent beam

• A

• B

• C

Which of these is a parallel beam

• A

• B

• C

• None of these

Sun gives off its own light and hence is said to be

• A Star

• Light Source

• Luminous object

• Non-luminous object