OPTICES TEST by Rahul Tripathi
OPTICES TEST by Rahul Tripathi
Welcome to the OPTICES TEST, a challenging quiz designed to assess your knowledge of optics. Test your understanding of light behavior, lenses, mirrors, and associated phenomena!
- 10 engaging multiple-choice questions
- Varied difficulty levels
- Score points and challenge yourself!
A narrow beam of white light goes through a slab
having parallel faces
having parallel faces
(a) the light never splits in different colours
(b) the emergent beam is white
(c) the light inside the slab is split into different colours
(d) the light inside the slab is white
Other
Please Specify:
The turning back of light into the same medium after incident on a boundary separating two media is called
(a) reflection of light
(b) refraction of light
(c) dispersion of light
(d) interference of light
In image formation from spherical mirrors, only paraxial rays are considered because they
(a) are easy to handle geometrically
(b) contain most of the intensity of the incident light
(c) form nearly a point image of a point source
(d) show minimum dispersion effect
Astigmatism is corrected using
(a) cylindrical lens
(b) plano-convex lens
(c) plano-concave lens
(d) convex lens
The focal length of a normal eye-lens is about
(a) 1 mm
(b) 2 cm
(c) 25 cm
(d) 1 m
A beam of monochromatic blue light of wavelength 420 nm in air travels in water (μ = 4/3). Its wavelength in water will be
(a) 280 nm
(b) 560 nm
(c)315 nm
(d)400 nm
The focal length of the objective of a telescope is 60 cm. To obtain a magnification of 20, the focal length of the eye piece should be
(a) 2 cm
(b) 3 cm
(c) 4 cm
(d) 5 cm
To explain the diffraction phenomenon a plane wave front is divided into
(a) groups
(b) sub groups
(c) half period zones
(d) quarter period zones
The diffraction phenomenon happens
(a) only for mechanical waves
(b) only for electromagnetic waves
(c) only for visible light waves
(d) for both mechanical and electromagnetic waves
The principal focal length of a zone plate is more for
(a) Red colour
(b) Green colour
(c) Violet colour
(d) Yellow colour
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