A) Angle
B) Critical angle
C) Refraction
D) None
A) Right
B) Critical
C) None
A) 49o.
B) 50o
C) 45o
A) 90
B) 56
C) 42o
D) 60
A) External reflection
B) Total internal reflection
C) Critical reflection
A) Light must enter from a denser medium to rare medium
B) Angle of incidence must be greater than critical angle
C) Both ‘a’ and ‘b’
A) 3 rectangular surfaces
B) 2 triangular surfaces
D) None of these
A) 90o
B) 45
C) 60
D) 180
A) Reflecting prism
B) Periscope
C) Mirage
D) All of these
A) Mirage
B) Prism
C) Periscope
B) Reflection
A) Reality
B) Virtuality
C) Illusion
A) Refraction
C) Total internal reflection
A) Total internal reflection
B) Refraction
C) Reflection
A) 8
B) 6
C) 7
D) 10
A) Dispersion
B) Convergence
C) Inversion
A) Spectrum of light
B) Group of light
C) Band of light
A) VIBGYOR
B) VEBYOR
C) YORBOG
A) Reflection of light
C) Dispersion of light
A) Middle
B) Upper
C) Bottom
D) Not at all
A) Upper
B) Middle
D) Lower side
A) White
B) Primary
C) Secondary
A) Red
B) Blue
C) Green
D) All of the above
A) Secondary
C) Tertiary
A) Primary
B) Secondary
A) Sky blue
C) Peacock color
D) Cyan
A) Magenta
B) Yellow
A) Prism
B) Newton color disc
A) Reflects
B) Absorb
C) Refract