ENTRANCE TEST – 2012 Multiple Questions and Answers.




6.w0rk d0ne by a c0nstnt s0urce 0f 1kW p0wer that is 1000 J per sec in 0ne hr is?
A. kwh
B. watt
C. watt hour
D. all of these

7.If in a parallel plate capacitor we insert a metal sheet of half the thickness as compared with the spacing between the plates of the capacitor, the capacitance becomes...?
A. C/4
B. C/2
C. 2 C
D. 4 C

8.the focal length (f=10cm). At what distance object should be placed to get an image twice size of 0bjcet?
A. 15cm
B. 13cm
C. 10cm
D. None of these

9. In difracti0n experiment, something d0ne by m0ving apparatus away fr0m screen such that plane wavefronts are obtained! This describes?
A. michels0n diffracti0n
B. newt0ns diffracti0n
C. All of these
D. None of these

10.Which of the following electromagnetic phenomenon wave nature is n0t enough to explain?
A. Photoelectric effect
B. interference
C. Diffracti0n
D. Diffracti0n

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