Science And Inventions 3

Front 1

Which of these electromagentic waves has the shortest wavelength?

Back 1

X-rays

Front 2

When visible light is incident upon clear glass, atoms in the glass

Back 2

are forced into vibration

Front 3

Sunburns are produced by

Back 3

ultraviolet light

Front 4

The size of the pupil of your eye depends on

Back 4

your mood
the brightness of light in the room

Front 5

Which of the following can not travel a vacuum?

Back 5

a sound wave

Front 6

A pair of sunglasses and a pair of reading glasses are left in the sunlight. The hotter glasses would be the

Back 6

sunglasses

Front 7

The color of an opaque object is the same as the light that is

Back 7

reflected

Front 8

What color light is transmitted by a piece of blue glass?

Back 8

blue

Front 9

Complimentary colors are two colors that

Back 9

produce white light when added together

Front 10

Different colors of light correspond to different light

Back 10

frequencies

Front 11

A mixture of cyan and yellow pigments appears

Back 11

green

Front 12

The sky is blue because air molecules in the sky act as tiny

Back 12

resonators which scatter blue light

Front 13

Red sunsets are due to lower frequencies of light that

Back 13

survive being scattered in the air

Front 14

The greenish blue of water is evidence for the

Back 14

absorption of red light

Front 15

According to Huygen's Principle, every point on a wave

Back 15

behaves as a source of new waves

Front 16

Polarization is a property of

Back 16

transverse waves

Front 17

Light will not pass through a pair of polaroids when their aces are

Back 17

perpendicular

Front 18

Monochromatic light is light of a single

Back 18

wavelength
frequency
color

Front 19

Light from a lit match comes from

Back 19

electrons

Front 20

Light is emitted when an electron

Back 20

makes a transition to a lower energy level

Front 21

Compared to the energy put into a laser, the energy of the laser beam is

Back 21

less

Front 22

Light from a laser is

Back 22

monochromatic
in phase
coherent

Front 23

A watch dial that continues to glow after a week in the dark is almost certainly

Back 23

radioactive

Front 24

Infrared waves are often called heat waves because they

Back 24

induce resonance in molecules and increase internal energy in a substance

Front 25

In the process of fluorescence, part of the input energy immediately

Back 25

becomes internal energy and the rest lower frequency light