Light, Shadow and reflection

Thin straight lines are called_______________

• beams

• rays

• light

• shadow

Light travels ---------- than sound ?

• Slower

• Medium

• Faster

Light travels at the constant speed of ----------- in a vacuum ?

• 299792.458 km/h

• 289792.458 km/sec

• 299792.458 km/sec

Tags

NGSS.MS-PS4-2

The property of light is called as ------------ of light.

• Rectilinear propagation

• parallel propagation

• natural propagation

------------ objects create shadows.

• Opaque

• Translucent

• Transparent

• None of these

Tags

NGSS.4-PS4-2

Image formed by a pinhole camera is ………………..

• down

• straight

• laterally inverted

• virtual image

When screen is far away from the objects, the shadow will have no penumbra.

• True

• False

A_______ is formed when light is reflected from an object

• Shadow

• image

• reflection

Tags

NGSS.MS-PS4-2

Region of absence of light

• Light

• Shadow

• Reflection

Firefly is a living ----------- body.

• water body

• Non - Luminous

• Luminous