Narayana EAMCET Test

From where can I free download Narayana Gourp of Educational Institute EAMCET Physics question paper?

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You want to get Narayana Gourp of Educational Institute EAMCET Physics question paper so here it is:

1. Two sources A and B are sending notes of frequency 680Hz. A lestener moves from A to B with a constant velocity ‘u’. If the speed of sound in air is 340ms-1, what must be the value of ‘u’ so that he hears 10 beats per second (Engg-2009)
1) 2.0 ms-1 2) 2.5 ms-1 3) 3.0 ms-1 4) 3.5 ms-1

2. Two identical piano wire have a fundamental frequency of 600c/s when kept under the same tension. What fractional increase in the tension of one wire will lead to the occurence of 6 beats per second when both wire vibrate simultaneously (Engg-2009)
1) 0.01 2) 0.02 3) 0.03 4) 0.04

3. A theatre of volume 3 100 40 10m ´ ´ can accommodate 1000 visitors. The reverberation time of the theatre when empty is 8.5 sec. If the theatre is now filled with 500 visitors, occupying the front-half seats, the reverberation time changes to 6.2 seconds. The average absorption coefficient of each visitor is nearly (Med-2009)
1) 0.6 2) 0.5 3) 0.45 4) 0.7

Complete question paper is available in attached pdf file which you can free download.