Q.1
What form does light travel in?
  • Curved line
  • Zig-Zag
  • Straight Line
Q.2
The far point of a hypermetropic eye is at a finite distance from the eye.
  • False
  • True
Q.3
Dispersion of light referred to as________.
  • Bending of light
  • Splitting of light in seven colours
  • Splitting of light in primary colours
  • Bouncing back of light
Q.4
Prisms usually have___________ faces.
  • Square
  • Triangular
  • Rectangular
  • Circular
Q.5
How the pond appears to be, when it is seen from outside?
  • Seems Deeper
  • Seems shallower
  • Seems very deep
  • No change is there
Q.6
The ratios of the speeds of light in a given pair of media gives us________.
  • Absolute refractive index
  • Relative refractive index
  • Optical density
  • None of these
Q.7
THE LINE JOINING THE CENTRES OF CURVATURE OF THE 2 SURFACES OF A LENS IS KNOWN AS ITS...........
  • OPTICAL CENTRE
  • OPTICAL DENSER
  • PRINCIPAL AXIS
  • RADII
Q.8
Speed of light in a given medium is the indicator of its________.
  • Refractive index
  • Optical density
  • Dispersion
  • None of these
Q.9
The broad wavelength range of visible spectrum is-The broad wavelength range of visible spectrum is
  • (10000-20000) A
  • (4000-7000) A
  • (2000-4000) A
  • None of these
Q.10
For which colour, refractive index of glass is maximum?
  • red
  • violet
  • green
  • yellow
Q.11
When white light enters a glass prism from air, the angle of deviation is least for
  • blue light
  • yellow light
  • red light
  • violet light
Q.12
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
  • is scattered the most by smoke or fog
  • is scattered the least by smoke or fog
  • is absorbed the most by smoke or fog
  • moves fastest in air
Q.13
The deflection of light by minute particles and molecules of the atmosphere in all direction is called ____________ of light.
  • dispersion
  • scattering
  • interference
  • tyndell effect
Q.14
One cannot see through the fog, because
  • refractive index of the fog is very high
  • light suffers total reflection at droplets
  • fog absorbs light
  • light is scattered by the droplets
Q.15
THE ANGLE, BETWEEN THE INCIDENT RAY AND THE NORMAL AT THE POINT OF INCIDENCE IS KNOWN AS.....
  • ANGLE OF INCIDENCE
  • ANGLE OF REFRACTION
  • PRISM
  • LENS
Q.16
Red light is refracted the least by a glass prism because red light travels the ............ through the glass prism
  • slowest
  • fastest
Q.17
Violet light is refracted the most by a glass prism as the light travels the ................ through the glass prism.
  • slowest
  • fastest
Q.18
The dispersion of light is the separation of white light into the spectrum of light, namely red, orange, yellow, green,blue,indigo and violet.
  • True
  • False
Q.19
A transparent object that bends light into rainbow colors.
  • prism
  • mirror
  • convex lens
  • concave lens
Q.20
The breaking up of white light into its component .Based on the statement given, name the process that takes place in the white light.
  • Dispersion
  • Reflection
  • Refraction
  • Scattering
0 h : 0 m : 1 s