Light (10)

Refraction of light through a glass block and a triangular prism; Total internal reflection; Lenses;

Using a triangular prism to produce a visible spectrum from white light; Electromagnetic spectrum. Scattering of light

State the conditions required for total internal reflection
Define scattering
A virtual, diminished image is formed when an object is placed
Copy the diagram given below and complete the path of light ray
Define critical angle
An electromagnetic radiation is used for photography in fog
What is the relation between the refractive index of water with respect to air
The diagram below shows a light source P embedded
If the lens is placed in water instead of air, how does its focal length change
How does the angle of deviation formed by a prism change
A ray of light falls normally on a rectangular glass slab
Complete the path of the monochromatic light ray AB incident
Where should an object be placed in front of a convex lens
An object is placed at a distance 24 cm in front of a convex lens
A pond appears to be 2.7 m deep. If the refractive index of water is 4/3
The wave lengths for the light of red and blue colours
A diver in water looks obliquely at an object AB in air
Complete the path of the ray AB through the glass prism in PQR
A lens of focal length 20 cm forms an inverted image at a distance 60 cm
During the day: (i) Clouds appear white (ii) Sky appears blue
Name the system which enables us to locate underwater objects
Why is the ratio of the velocities of light of wavelengths 4000Å and 8000Å in vacuum 1:1
The power of a lens is -5D
State the position of the object in front of a converging lens if
State the relation between the critical angle and the absolute refractive index of a medium
The following diagram shows a 60, 30, 90 glass prism of critical angle 42
A ray of light XY passes through a right angled isosceles prism as shown below
An object AB is placed between O and F1 on the principal axis of a converging lens as shown in the diagram
An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm
Draw the diagram of a right angled isosceles prism which is used to make an inverted image erect
real and apparent depth
Draw a ray diagram to show the refraction of a monochromatic ray
A Lens forms an upright and diminished image of an object
A ray of light travels from water to air
The diagram below shows a point source P inside a water container
A boy uses blue colour of light to find the refractive index of glass
State the dependence of angle of deviation
Write a relationship between angle of incidence and angle of refraction
When a ray of light enters from one medium to another having different optical
Write one condition where it does not bend when entering
A lens produces a virtual image between the object and the lens
What do you understand by the term ‘Scattering of light’