Light and Shadow 1

Light and Shadow – MCQs

1. Bioluminescence is the ability of organisms to

reflect light absorb light produce light by chemical reactions transmit light

2. Which of the following shows bioluminescence?

Frog Firefly Sparrow Earthworm

3. A shadow is formed when an object blocks

sound waves heat energy the path of light magnetic field

4. Which is NOT required to form a shadow?

Source of light Opaque object Screen Lens

5. In a total lunar eclipse, the Moon passes through Earth’s

penumbra atmosphere umbra completely corona

6. A penumbral lunar eclipse causes

complete darkness partial covering slight dimming bright ring

7. An annular solar eclipse occurs when

Moon fully covers the Sun Earth is between Sun and Moon Moon appears smaller than the Sun Sun enters Earth’s shadow

8. A pinhole camera works on the principle that

light bends around corners light travels in straight lines light gets absorbed light scatters

9. The image formed by a pinhole camera is always

erect virtual inverted enlarged

10. Space appears black because

Sun is absent light is absorbed no atmosphere to scatter light stars do not emit light