Q 1 :

Read the passage carefully and answer the following questions from (i) to (v):

Binoculars, like telescopes, produce magnified images of far away objects. Figure shows a typical binocular design. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that are used to completely reflect the incoming ray to invert the image again, so that the viewer sees an image that is upright compared to the object.

 

(i) Binocular is basically a:

  • microscope

     

  • telescope

     

  • dispersion device

     

  • magnifying glass

     

(2)

 



Q 2 :

Read the passage carefully and answer the following questions from (i) to (v):

Binoculars, like telescopes, produce magnified images of far away objects. Figure shows a typical binocular design. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that are used to completely reflect the incoming ray to invert the image again, so that the viewer sees an image that is upright compared to the object.

 

(ii) Prisms are used in binoculars:

  • for reflection

     

  • for refraction

     

  • for dispersion

     

  • for total internal reflection

     

(4)

 



Q 3 :

Read the passage carefully and answer the following questions from (i) to (v):

Binoculars, like telescopes, produce magnified images of far away objects. Figure shows a typical binocular design. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that are used to completely reflect the incoming ray to invert the image again, so that the viewer sees an image that is upright compared to the object.

 

(iii) Binoculars are used to see:

  • near objects

     

  • far objects

     

  • both near and far objects

     

  • none of the above

     

(2)

 



Q 4 :

Read the passage carefully and answer the following questions from (i) to (v):

Binoculars, like telescopes, produce magnified images of far away objects. Figure shows a typical binocular design. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that are used to completely reflect the incoming ray to invert the image again, so that the viewer sees an image that is upright compared to the object.

 

(iv) Refractive index of air is:

  • 1.00

     

  • 0.5

     

  • 1.5

     

  • 2.0

     

(1)

 



Q 5 :

Read the passage carefully and answer the following questions from (i) to (v):

Binoculars, like telescopes, produce magnified images of far away objects. Figure shows a typical binocular design. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that are used to completely reflect the incoming ray to invert the image again, so that the viewer sees an image that is upright compared to the object.

 

(v) The lens facing object in binocular is called:

  • object lens

     

  • objective lens

     

  • intermediate lens

     

  • eye lens

     

(2)

 



Q 6 :

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

 

(i) Mirage is caused due to:

  • total Internal Reflection of light by the various layers of air

     

  • illusion of the presence of water

     

  • result of refraction of light from a non uniform medium

     

  • during sunny days when driving on a roadway

     

(1)

 



Q 7 :

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

 

(ii) What is mirage?

  • Depends on the position of object

     

  • Mirror is concave and the lens is convex

     

  • Goes straight into the second medium

     

  • Optical illusion caused due to Total Internal Reflection

     

(4)

 



Q 8 :

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

(iii) What are the two types of mirage?

  • Thin mirage and thick mirage

     

  • Inferior mirage and superior mirage

     

  • Intense mirage and diminished mirage

     

  • Light mirage and dark mirage

     

(2)

 



Q 9 :

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

(iv) How a mirage is formed?

  • Between focus and centre of curvature

     

  • Is formed away from the normal

     

  • Illusion of the presence of water and is a result of refraction of light from a non-uniform medium

     

  • Is reflected along the same path

     

(3)

 



Q 10 :

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

 

(v) Mirage is observed mainly during _______ days.

  • Sunny

     

  • Winter

     

  • Spring

     

  • Hot

     

(1)

 



Q 11 :

Read the passage carefully and answer the following questions from (i) to (v).

Rear view mirror is a device that allows the driver to see rearward. It usually finds its place at the top of windscreen in side of the cabin. This device is one of the most basic but essential safety devices in the vehicle. It provides assistance to the driver during overtaking, parking in reverse gear etc. Generally, vehicles also have a pair of mirrors attached to the body from outside. They are popular as ‘side mirrors’ or Outer Rear View Mirrors (ORVM) which serve the same purpose.

Almost all modern cars mount their side mirrors on the doors—normally at a pillar rather than the wings (the portion of the body above the wheel well).

(i) For a real object, which of the following can produce a real image?

  • Plane mirror

     

  • Concave mirror

     

  • Convex mirror

     

  • None of the above

     

(2)

 



Q 12 :

Read the passage carefully and answer the following questions from (i) to (v).

Rear view mirror is a device that allows the driver to see rearward. It usually finds its place at the top of windscreen in side of the cabin. This device is one of the most basic but essential safety devices in the vehicle. It provides assistance to the driver during overtaking, parking in reverse gear etc. Generally, vehicles also have a pair of mirrors attached to the body from outside. They are popular as ‘side mirrors’ or Outer Rear View Mirrors (ORVM) which serve the same purpose.

Almost all modern cars mount their side mirrors on the doors—normally at a pillar rather than the wings (the portion of the body above the wheel well).

(ii) An object at a distance of +15 cm is slowly moved towards the pole of a convex mirror. The image will get…

  • shortened and real

     

  • enlarged and real

     

  • enlarge and virtual

     

  • diminished and virtual

     

(4)

 



Q 13 :

Read the passage carefully and answer the following questions from (i) to (v).

Rear view mirror is a device that allows the driver to see rearward. It usually finds its place at the top of windscreen in side of the cabin. This device is one of the most basic but essential safety devices in the vehicle. It provides assistance to the driver during overtaking, parking in reverse gear etc. Generally, vehicles also have a pair of mirrors attached to the body from outside. They are popular as ‘side mirrors’ or Outer Rear View Mirrors (ORVM) which serve the same purpose.

Almost all modern cars mount their side mirrors on the doors—normally at a pillar rather than the wings (the portion of the body above the wheel well).

(iii) A convex mirror is used:

  • by a dentist

     

  • for shaving

     

  • as a rear view mirror in vehicles

     

  • as a light reflector for obtaining a parallel beam of light

     

(3)

 



Q 14 :

Read the passage carefully and answer the following questions from (i) to (v).

Rear view mirror is a device that allows the driver to see rearward. It usually finds its place at the top of windscreen in side of the cabin. This device is one of the most basic but essential safety devices in the vehicle. It provides assistance to the driver during overtaking, parking in reverse gear etc. Generally, vehicles also have a pair of mirrors attached to the body from outside. They are popular as ‘side mirrors’ or Outer Rear View Mirrors (ORVM) which serve the same purpose.

Almost all modern cars mount their side mirrors on the doors—normally at a pillar rather than the wings (the portion of the body above the wheel well).

(iv) The word ‘AMBULANCE’ is written on the vehicle as:

  • CNALUBMA

     

  • ECNALBUMA

     

  • AMBULNAEC

     

  • None of the above

     

(b)

 



Q 15 :

Read the passage carefully and answer the following questions from (i) to (v).

Rear view mirror is a device that allows the driver to see rearward. It usually finds its place at the top of windscreen in side of the cabin. This device is one of the most basic but essential safety devices in the vehicle. It provides assistance to the driver during overtaking, parking in reverse gear etc. Generally, vehicles also have a pair of mirrors attached to the body from outside. They are popular as ‘side mirrors’ or Outer Rear View Mirrors (ORVM) which serve the same purpose.

Almost all modern cars mount their side mirrors on the doors—normally at a pillar rather than the wings (the portion of the body above the wheel well).

(v) Mark the correct statement:

  • Convex mirror conform images of objects spread over a large area.

     

  • Convex mirrors are used by dentist.

     

  • In convex mirror image is formed larger in size, erect and real.

     

  • Convex mirror forms real image.

     

(1)