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Q.1: In optic fiber transmission system ——- are used regenerate the dim light signal?
Q.2: Magnification of the astronomical telescope is——-?
Q.3: Errors in the transmission of power through optic fiber can be minimized by using a——-?
- Multimode index fiber
- Graded index fiber
- Single mode step index fiber
- Copper wire
Q.4: The function of collimeter in spectrometer is——–?
- to produce parallel beams of light
- to filter the light rays
- to make them
- no function
Q.5: In optic fiber transmission the repeater are separated through a distance of —– km in newer system?
Q.6: Michelson devised the formula to calculate the speed of light——–?
- C = 4fd
- C = 8fd
- C = 16fd
- C = 5/2fd
Q.7: A convex lens acts as a diverging lens if the———?
- object is beyond C
- if the object is with in C
- if the object is within f
- both B and C
Q.8: The equation θ = 1.22 λ/D was devised by——–?
Q.9: In S.H.M. the velocity of a particle is maximum at——–?
- mean position
- extreme position
- middle between the mean and extreme position on the right side
- middle between the mean and extreme position on the left side
Q.10: The acceleration of a projection on the diameter for a particle moving along a circle is——–?