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.
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 - 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 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 - The refractive index of the ocean water_______________?
A. Increases with salinity
B. Increases with temperature
C. Decreases with salinity
D. Decreases with temperature - 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
- Which on speed C. of the electromagnetic wave is correct ?
A. C = v
B. C = /v
C. C = v
D. C = 1/ - 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 - 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 - Electromagnetic spectrum contains________________?
A. Gamma rays (wave length < 10-10 m)
B. Ultraviolet rays (wave length < 10-6 m)
C. Infrared rays (wave length < 10 -4 m)
D. All 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°
