LIGHTSHADOWS AND REFLECTIONS,FUN WITH MAGNETS AND WATER REV

Light travels in

• straight line

• curved line

• zig-zag line

• randomly

When an opaque object comes in the path of light it forms

• an image with colors

• shadow

• black and white image

• None of the above

Jugnu (Firefly) is a living luminous body.

• Yes

• no

• maybe

• False

An object or material could be opaque, transparent, translucent or ……………….. .

• White

• luminous

• Rough

• Soft

Out of these, which one is not a man-made luminous body?

• Electric bulb

• Burning candle

• Firefly (Jugnu)

• Oil lamp

Define luminous body.

• a object that emits its on light

• a object

• a star

• none of these

Which is a device to image the sun?

• Plane mirror

• Pinhole camera

• A straight pipe

• Glass slab

A …………….. is a dark outline of an opaque object that blocks light coming from a source.

• Shadow

• Image

• Light

• Sound

Transparent substances reflect all the light falling on them.

• True

• False

In a mirror, if A is able to see B, B also can see A.

• False

• True