# 1).The engine of a truck moving a straight road delivers constant power. The distance travelled by the truck in time t is proportional toA. t B. t 2 C. √t D. t 3/22).A beam of light is converging towards a point I on a screen. A plane parallel plate of glass(thickness in the direction of the beam = t, refractive index = μ ) is introduced in the path of thebeam. The convergence point is shifted byA. t (μ - 1) away B. t (1 + 1/μ ) away C. t (1 - 1/μ ) nearer D. t (1 + 1/μ ) nearer3).The amount of work done by the labourerwho carries n bricks, each of mass m, to the roofof a house whose height is h isA. n mgh B. mgh/n C. zero D. ghn/m4).The equation of a transverse wave on astretched string is given byy = 0.05 sin π (2t/0.002 -x/0.1 ) where x and yare expressed in metres and t in sec.The speed of the wave isA.100m/sec B. 50 m/s C. 200 m/s D. 400 m/s5).An electric motor while lifting a given load produces a tension of 4500 N in the cableattached to the load. If the motor winds the cable at the rate of 2m/s, then power must beA. 9 kW B. 15 kW C. 225 kW D. 9000 H.P

2
by chahar2011

2014-04-08T19:11:38+05:30
1) d)
2) b)
3) c)
4) a)
5) c)
HOPE THIS HELPS U !!!!!!!!
2014-04-08T20:26:36+05:30
I thnk!!!!!!!!!!!                                                                                                                 1) a
2)b
3)a
4)b
5)c