Physics
Related Questions
What do you call ray of lights that are emitted by a point source which travel in different directions?
- Parallel beam
- Convergent beam
- Divergent beam
- Ray
Which of the following will cast a shadow?
- Butter paper
- Glass
- Cellophane
- School bag
Give reasons for the following statements.
(a) A table does not emit any light.
(b) Light does not completely pass through a coloured bottle.
(c) A glass does not cast any shadow.
(d) The length of shadows depends on the time of the day.
(e) The size of the shadow depends on the size of the light source.
Match the columns.
Column A Column B 1. Nature of image formed by pinhole camera (a) Grey zone of a shadow 2. Lunar eclipse (b) Dark shadow 3. Example of penumbra (c) Inverted image 4. Luminous object (d) Full moon night 5. Shadow formed by opaque object (e) LEDs