Science-Q2-S4-G10

Which of the following uses a concave lens?

• Telescopes

• Car’s headlight

• Magnifying glasses

• Dentist’s mouth mirror

The sun’s rays are observed to focus at a point behind a lens. What kind of lens

was used?

• Focusing lens

• Diverging lens

• Converging lens

• Plano concave lens

Which of the following is an application of multiple image reflection?

• Binoculars

• Kaleidoscope

• Magnifying glass

• Car’s side mirrors

You see the reflection of the analog type of clock without numbers in your plane

mirror. The image formed by the hands of the clock shows the time of 8:30. What is

the real time? (can be application or analysis)

• 3:30

• 8:30

• 9:30

• 12:30

Which mirror concept explains why the word AMBULANCE is written in reverse

in an ambulance car?

• Multiple image

• Lateral inversion

• Lateral magnification

• Virtual and real image

Rita, a medicine student, wanted to examine the differences between animal and

plant cells. Her observation will be made better if she uses what optical instrument?

• Telescope

• Microscope

• C. DSLR Camera

• Magnifying glass

Meniscus lens converge light before it enters the eye eventually reducing

the image distance. It is used to correct what kind of eye condition?

• Astigmatism

• Hyperopia

• Hypermetropia

• Myopia

Which of the following statements is true about a virtual image?

• Virtual image seems to appear behind the mirror and is upside down.

• Virtual image is formed after the light rays are reflected from the mirror.

• Virtual image seems to appear behind the mirror and is inverted.

• Virtual image seems to appear behind the mirror and is seen in an upright

  position.

Some of the basic and fundamental parts of a camera functions just like how the

Different parts of our eyes work. Which of the following parts of the eyes function like the aperture and iris diaphragm of a camera?

• Eyelid and cornea

• Pupil and eyelid

• Pupil and iris

• Retina and cornea

How can you explain the concepts of reflection of light using the diagram above?

• Illuminating light reaches the specimen, which may absorb some of the

  light and reflect some of the light, either in a specular or diffuse manner.

• It works by using two lenses to focus the light and make it look like the

  object is closer to you than it really is. Both lenses are in a shape that's called

  'convex'.

• Light travels in a straight line. When light bumps into something it

  changes direction. If light bumps into something shiny it reflects back

  in the direction it came from.

• The light from the object falls on one mirror at a 45-degree angle from

  the object and is reflected. This reflected light then falls on another

  mirror and is again reflected until it reaches the eye.