A. C = v
B. C = /v
C. C = v
D. C = 1/
Related Mcqs:
- “An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media”. This phenomenon is known as___________________?
A. Fresnel reflection
B. Fresnel refraction
C. Snell’s law
D. None of these - The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called________________?
A. Sensors
B. Passive sensors
C. Active sensors
D. None of these - According to the Snell’s law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2)________________?
A. The angle of incidence is equal to the angle of refraction
B. The angle of refraction r) is given by sin i
C. Both A. and B.
D. Neither A. nor B. - The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from__________________?
A. 10-10 to 106 m
B. 10-8 to 106 m
C. 10-10 to 1010 m
D. 10-8 to 108 m
- If electric permittivity and magnetic permeability of the medium are respectively and , then the velocity (Cm) of the electromagnetic wave in the medium is given by___________________?
A. Cm = 1/
B. Cm
C. Cm
D. None of these - The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called____________________?
A. Passive remote sensing
B. Active remote sensing
C. Neutral remote sensing
D. None of these - Coherence of two electromagnetic waves takes place if their phase difference is_________________?
A. Constant in time
B. Constant in space
C. Constant in time and space
D. None of these - In case of reflection and refraction of electromagnetic radiation ?
A. Angle of incidence = angle of refraction
B. Angle of incidence = angle of reflection
C. Angle of refraction = sum of the angles of incidence and refraction
D. All the above - Which one of the following statement is incorrect regarding the electromagnetic radiation ?
A. These are produced by the motion of electric charge
B. The oscillation of charged particles sets up changing electric fields
C. The changing electric fields induce the changing magnetic fields in the surrounding medium
D. None of these - Critical angle of electromagnetic radiation takes place if__________________?
A. Angle of incidence is equal to angle of refraction
B. Angle of incidence is greater than the angle of refraction
C. Angle of incidence is equal to 90°
D. Angle of refraction is equal to 90°
