Question : Which one of the following is not a property of electromagnetic waves?
Option 1: Electromagnetic waves do not show interference and diffraction.
Option 2: Osillating electric field and magnetic field are perpendicular to each other.
Option 3: Electromagnetic waves are transverse waves.
Option 4: Electromagnetic waves do not require a medium to propagate.
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Correct Answer: Electromagnetic waves do not show interference and diffraction.
Solution : The correct option is Electromegnetic waves do not show interference and diffraction.
Electromagnetic waves, like light, demonstrate both interference and diffraction. Interference arises from the interaction of two or more waves, leading to patterns of constructive and destructive interference. Diffraction, on the other hand, involves the bending or spreading of waves when they encounter an obstacle or opening. This phenomenon is also observed in electromagnetic waves, including light.
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Question : Which phenomena show the particle nature of light?
Option 1: Diffraction
Option 2: Interference
Option 3: Photoelectric effect
Option 4: Polarisation
Question : The induced current is highest when the direction of motion of the coil is:
Option 1: Not at right angles to the magnetic field.
Option 2: At right angles to the electricity.
Option 3: At right angles to the electric source.
Option 4: At right angles to the magnetic field.
Question : Optical fibres are based on the phenomenon of which of the following?
Option 1: Interference
Option 2: Dispersion
Option 3: Diffraction
Option 4: Total internal reflection
Question : A mirage occurs because of:
Option 1: reflction by hot ground
Option 2: total internal reflection by layers of air
Option 3: interference of light
Option 4: diffraction of light
Question : Select the correct option concerning the given statement. Two tangents are drawn at the end of the diameter of a circle.
Option 1: They intersect each other.
Option 2: They pass through the origin.
Option 3: They are parallel to each other.
Option 4: They are perpendicular to each other.
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