SPEED & LIGHT

what are the colours for the spectrum of white light?

• red, orange, yellow, green, blue and violet

• red, orange, yellow, green, black and white

• white

• orange, yellow, green, cyan, blue and violet

what of the following objects reflect light?

• 
• 
• 
• 

what is a source of light?

• A fire

• A laptop screen

• A light bulb

• The sun

What does it mean when something is non-luminous?

• something you cant see

• something that gives out light

• something that does not give out light

• something you can see but you cant touch

what do you call a region where no light falls.

• A blackhole

• A shadow

• Transparent

• A mirror

What is speed?

• An area where no light falls

• The resistance that one surface or object encounters when moving over another.

• An individual animal or a plant

• Speed is the distance travelled per unit of time. It is how fast an object is moving

What is the formula for speed?

• distance ÷ time

• time x distance

• distance x speed

• speed ÷ time

light can pass through a .............. object

A car travels a distance of 500 km in 10 hours. What is its speed in km/hr?

• 100 km/hr

• 50 km/hr

• 10 km/hr

• 55 km/hr

Aman can run a distance of 100 m in 20 seconds. Find the speed of Aman in m/s.

• 25 m/s

• 15 m/s

• 10 m/s

• 5 m/s