Which statements are correct?
A Light is important only to plants.
B We see an object that gives off no light when light is reflected from it into our eyes.
C A firefly and lightning are natural sources of light.
D We see things because light travels from our eyes to them.
A A, B and C only
B C only
C B, C and D only
D B and C only
SAMPLE 2
Which statements are correct?
A Ceramic and wood do not let light pass through them.
B Shadows are formed because light travels in straight lines.
C A light shadow is formed when light is blocked by frosted glass.
D A shadow always has exactly the same shape as the object.
A B and C only
B A and B only
C A, B and C only
D A, B, C and D
SAMPLE 3
Which statements are correct?
A The nearer an object is to the light source, the bigger its shadow.
B The nearer an object is to the screen, the bigger its shadow.
C The shadow of an object is always the same size as the object.
D Light that bounces off an object is said to be reflected.
A A only
B A, C and D only
C D only
D A and D only
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