In monochromatic red light a blue book will probably appear to be_________________?

A. Black
B. Purple
C. Green
D. No scientific reasoning available

In double slit experiment if one of the two slit is covered then________________?

A. No interference fringes are observed
B. No diffraction fringes are observed
C. No fringes observed
D. Interference pattern not disturbed

In the shadow of a ball the central portion appears bright that happens due to_________________?

A. Interference
B. Diffraction
C. Polarization
D. Refraction

Crystals of a material can behave as_________________?

A. Convex lens
B. Interferometer
C. Diffraction grating
D. Concave

Which is not optically active ?

A. Sugar
B. Tartaric acid
C. Water
D. Sodium chlorate

A point source of light placed in a homogeneous medium gives rise to ___________________?

A. A cylindrical wave front
B. An elliptical wave front
C. A spherical wave front
D. A plane wave front

Which one of the following is nearly monochromatic light ?

A. Light form fluorescent tube
B. Light form neon lamp
C. Light form sodium lamp
D. Light form simple lamp

When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?

A. Polarization
B. Constructive interference
C. Destructive interference
D. Diffraction

In Young double slit experiment, if white light is used____________________?

A. Alternate dark and bright fringes will be seen
B. Coloured fringes will be seen
C. No interference fringes will be seen
D. Impossible to predict

In an interference pattern______________________?

A. Bright fringes are wider than dark fringes
B. Dark fringes are wider than bright fringe
C. Both dark and bright fringes are of equal width
D. Central fringes are brighter than the outer fringes