Tick (✓) the Correct Option:
1. Shadows form because:
(a) opaque objects reflect light (b) opaque objects do not allow light to pass through them (c) light travels in one direction from a source (d) light bends around an opaque object
2. Objects do not allow any light to pass through them.
(a) Transparent (b) Translucent (c) Opaque (d) Luminous
3. Which of the following is a non-luminous body? (a) Moon (b) Sun (c) Bulb (d) Burning candle
4. The colour of a shadow is : (a) black (b) green (c) grey (d) cannot say
5. The speed of light in vacuum is :
(a) 3 × 108 m/sec (b) 2 × 109 m/sec (c) 1.5 × 108 m/sec M (d) none of these
1. Shadows form because:
(a) opaque objects reflect light (b) opaque objects do not allow light to pass through them (c) light travels in one direction from a source (d) light bends around an opaque object
2. Objects do not allow any light to pass through them.
(a) Transparent (b) Translucent (c) Opaque (d) Luminous
3. Which of the following is a non-luminous body? (a) Moon (b) Sun (c) Bulb (d) Burning candle
4. The colour of a shadow is : (a) black (b) green (c) grey (d) cannot say
5. The speed of light in vacuum is :
(a) 3 × 108 m/sec (b) 2 × 109 m/sec (c) 1.5 × 108 m/sec M (d) none of these
Answers & Comments
1 > b
2 > c
3 > a
4 > a
Answer:
1.Shadows form because: (b) opaque objects do not allow light to pass through them
2.Objects do not allow any light to pass through them: (c) Opaque
3.Which of the following is a non-luminous body? (a) Moon
4..the color of a shadow is: (a) black
5.
The speed of light in a vacuum is: (a) 3 × 10^8 m/sec