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Free Online Mock Physics Multiple Choice Test on Full test
Sub Category : Full test Test : 9 Time Left :
1) A ray of light is incident at the glass-water interface at an angle i. It emerges finally parallel to the surface of water. Then the value of a micro g would be:(1) 1/sin I (2) 4/3 (3) 4/(3 sin i) (4) 3/(4 sin i)
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2) A nucleus with mass number 220 initially at rest emits an alpha-particle. If the Q value of the reaction is 5.5 MeV, calculate kinetic energy of the alpha-particle.(1) 5.4 MeV (2) 4.5 MeV (3) 6.5 MeV (4) 5.6 MeV
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3) Starting with the same initial conditions, an ideal gas expands from volume V1 to V2 in three different ways. The work done by the gas is W1 if the process is purely isothermal, W2 if purely isobaric and W3 if purely adiabatic. Then(1) W2greater than W1 greater than W3 (2) W2 greater than W3 greaterthan W1 (3) W1 greater than W2 greater than W3 (4) W1 greater than W3 greater thanW2
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4) The radioactive materials x1 and x2 have decay constants 10 lamda and lamda respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of x1 to that of x2 will be 1/e after a time(1) 1-9lamda (2)1/ 11 lamda (3) 11/10 lamda (4) 1/10 lamda
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5) In a plane progressive harmonic wave of wavelength lamda, amplitude a, angular speed omega wave velocity v and maximum particle speed vp,(1) a less than lamda/2 pie (2) a = lamda/2 pie (3) a greater than lamda/2 pie (4) a = lamda/ pie
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