- (A) f2 + f1
- (B) f2 – f1
- (C) f1f2/f2+f1
- (D) f1f2/f1-f2
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- (A) chromatic aberration
- (B) spherical aberration
- (C) both spherical and chromatic
- (D) distortion
- (A) 15 cm
- (B) 25 cm
- (C) 30 cm
- (D) 40 cm
- (A) increase with increase in focal length
- (B) increase with decrease in focal length
- (C) no effect with decrease or increase with focal length
- (D) list distance of distinct vision
- (A) real and erect
- (B) virtual and erect
- (C) real and inverted
- (D) virtual
- (A) to produce parallel beams of light
- (B) to filter the light rays
- (C) to make them
- (D) no function
- (A) Multimode index fiber
- (B) Graded index fiber
- (C) Single mode step index fiber
- (D) Copper wire
- (A) fo+fe
- (B) fo/fe
- (C) fe/fo
- (D) (1+fo/fe)L/fo
- (A) Diodes
- (B) Repeaters
- (C) Laser
- (D) Transformer
- (A) 42°
- (B) 47°
- (C) 52°
- (D) 50°
