An interference pattern was made by using red light. If the red light is replaced by blue light, the fringes will becomes
Options
(a) Wider (b) Narrower (c) Fainter (d) Brighter
Correct Answer:
Narrower
Laser beams are used to measure long distance because
Options
(a) they are monochromatic (b) they are highly polarised (c) they are coherent (d) they have high degree of parallelism
Correct Answer:
they […]
The dual nature of light is exhibited by
Options
(a) Photoelectric effect (b) Refraction and interference (c) Diffraction and reflection (d) Diffraction and photoelectric effect
Correct Answer:
Diffraction and photoelectric effect
Explanation:
Diffraction exhibits […]
Coherent sources are those sources for which
Options
(a) Phase difference remains constant (b) Frequency remains constant (c) Both phase difference and frequency remain constant (d) None of these
Correct Answer:
Both phase […]
Newton postulated his corpuscular theory on the basis of
Options
(a) Newton’s Rings (b) Colours of thin films (c) Rectilinear propagation of light (d) Dispersion of white light
Correct Answer:
Rectilinear propagation of light
Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is π/2 at a point A and π at point B. […]
In Young’s double silt experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to […]
In Young’s experiment, the ratio of maximum to minimum intensities of the fringe system is 4:1. The amplitudes of the coherent sources are in the ratio
Options
(a) (4:1) (b) (3:1) (c) (2:1) (d) […]
Wave nature of light is verified by
Options
(a) Interference (b) Photoelectric effect (c) Reflection (d) Refraction
Correct Answer:
Interference
Explanation:
No explanation available. Be the first to write the explanation for this […]
As a light wave travels from one medium to another which of its following properties will change?
Options
(a) Speed and wavelength (b) Frequency and wavelength (c) Speed only (d) Frequency, wavelength and speed
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