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1. (a) different

2. (c) funny

3. (c) unfaithfu

4. (d) ascended

5. (a) retreated

A total reflecting prism gives us an image much brighter than that obtained by using a plane mirror.

Distance between the man and the mirror = 2 cm 

Distance between man and chart = 50 cm = 0.5 m 

Distance between chart and mirror = 0.5 m + 2 m = 2.5 m 

Distance between mirror and the image of the chart = 2.5 m 

Distance between man and the image of chart = Distance between man and the mirror +  Distance between mirror and the image of the chart = 2 m + 2.5 m = 4.5 m

B) less than 1

C) A concave mirror

C) When sun rays from a distant object are focused on a sheet of paper, it may start burning

D) virtual and diminished

Magnification – ve indicates it is an inverted image. So it is a real image.

Magnification 3 indicates the image size is three times the object size. So the image is enlarged. Since it is forming real image the mirror is concave.

The reflectors of the street lamp are made in convex in shape so that reflected rays diverge over the larger area on ground. Therefore convex mirror acts as a reflector in street lamp.

Correct option is B) real

Correct option is B) < 1

Correct option is D) 3 & 4

D) equal to ‘2f’

Correct option is: (b) virtual

The angle of incidence: The angle between the incident ray and normal is called angle (∠i) of incidence.

We are able to see various objects around us due to the diffused light reflected from these objects reaches to our eye which gives sense of vision to those objects.

A) Virtual and erect

(a) If the magnification has a plus sign, then image is virtual and erect

(b) If the magnification has a minus sign, then the image is real and inverted

Correct option is A) M = -1

Correct option is A) negative

Correct option is A) it forms a real image

Correct option is C) Reverse image

C) can be obtained on a screen

1. When the angle of incidence increases angle of deviation first decreases till it reaches the value known as minimum deviation position. After that with the increase in angle of incidence angle of deviation also increases. 

2. Angle of deviation decreases with increase in the wavelength of light, so angle of deviation is maximum for violet light and least for red light.

1. We already know that, to see any object, light should fall on it. 

2. In daytime we are able to see all objects which are in our room even though sunlight does not fall directly on those objects. 

3. The multiple reflection of sunlight from surfaces like wall, floor, ceiling etc, finally falls on the object and gets reflected by it and reaches us. 

4. This enables us to see the object.

(a) virtual;erect

(b) real;inverted

Correct option is C) lateral inversion

C) The normal to the surface and incident ray

B made of flint glass. Because it has higher refractive index.

The angle of deviation produced by a prism increases with the decrease in wavelength of the light used. 

(i) Violet light is deviated most by a prism. 

(ii) Red light is deviated least by a prism.

(a) When light travels from a rarer to a denser medium, its speed decreases

(b) When light travels from a denser to a rarer medium, its speed increases

(c) The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be 2/3

C) Plane mirror

The angle of deviation (δ) increases with the increase in the angle of prism (A).

Speed, intensity and wavelength will differ from that of incident ray

1. The periscope does not work. 

2. The slits made must be parallel to each other. 

3. If the slits are parallel then the mirror strips placed in them will give reflections property and the image of the object can be seen.

A) ‘A’ and ‘R’ are correct and ‘A’ is supported by ‘R’

D) Either plane or convex

D) Either plane at Convex

Correct option is: (d) either plane or convex

Speed, intensity and wavelength

Correct option is B) 2

A) on the same side of the object between focus and infinity

D) either away from or towards, the screen depending upon the position of object

(d) both (b) and (c)

The deviation produced by the prism does not depend on the size of prism.

The light ray bends at both the surfaces of prism towards its base.

1. Irregular reflection is observed in the window glass which is rough. 

2. Glass mirror on which water is sprinkled. This also makes irregular reflection.

Correct option is B) Lateral invertion
 

The reflection of light from a rough surface is called irregular reflection of light.