ENTRANCE TEST – 2010 Multiple Questions and Answers.




61.An oil film floating on water surface exhibits colour pattern due to the phenomenon of:
A. Diffraction
B. Polarization
C. Interference
D. Surface tension

62.For the horizontal pipe, the fluid inside it is flowing horizontally then Bernoulli’s equation can be written as
A. ) P + ρv2 = constant
B. 2P + ρv2 = constant
C. P + 2ρv2 = constant
D. 2P + 2ρv2 = constant

63.The value of the least distance of distinct vision or near point is ______ for a normal human eye
A. 20 cm
B. 25 cm
C. 10 cm
D. 15 cm

64.In a compound microscope, the magnification by objective = 20, magnification by eyepiece = 11, then the total magnification is
A. M = -220
B. M = -0.19
C. M = -0.05
D. M = 220

65.The distance between atoms is 0.30 nm. What will be the wavelength of X-rays at angle θ = 30o for 1st order diffraction?
A. λ = 0.60 nm
B. λ = 0.30 nm
C. λ = 0.20 nm
D. λ = 0.90 nm

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