LIGHT

Perpendicular line drawn from the point of incidence to the plane of reflecting surface is
1. normal
2. reflected ray
3. incident ray
The point at which incident ray strikes the reflecting surface is
1. point of incidence
2. point of reflection
3. normal
4. incident ray
Objects that allow light to pass through completely are called
1. transparent material
2. opaque material
3. translucent material
Objects that allow light to pass through partially are called
1. transparent material
2. opaque material
3. translucent material
Objects that donot allow light to pass through are called
1. transparent material
2. opaque material
3. translucent material
Angle between incident ray and normal is
1. angle of incidence
2. angle of reflection
3. normal
Angle between reflected ray and normal is
1. angle of incidence
2. angle of reflection
3. normal
Photography of sun using pinhole camera is called
1. bioluminescence
2. solography
3. rectilinear propagation
Light travelling in straight line is called
1. bioluminescence
2. solography
3. rectilinear propagation
Effect of certain chemical reaction occuring in the organism is called
1. bioluminescence
2. solography
3. rectilinear propagation