246. The value of acceleration due to gravity at moon is g/6, where g is the value of acceleration due to gravity at earth. The value of frequency of oscillation of simple pendulum on moon as compared to earth will be
A.Same
B.1/√6 times
C.1/6 times
D.√6 times
247. A body in S.H.M. will have maximum velocity when its amplitude is
A.Maximum
B.-ve maximum
C.Zero
D.Average
248. The length of a Second's pendulum is
A.99.0 cm
B.99.4 cm
C.100 cm
D.101.10 cm
249. In planetary motion, following parameter remains constant
A.Angular velocity
B.Linear velocity
C.Angular acceleration
D.Total angular momentum
250. The escape velocity on the surface of the earth is
A.1 km/sec
B.3.6 km/sec
C.8.8 km/sec
D.11.2 km/sec
251. The vehicle moving on a level circular path will exert pressure such that
A.The reaction on the outer wheels will be more
B.The reaction on the inner wheels will be more
C.The reaction on the inner as well as outer wheels will be equal
D.It depends upon the speed
252. The maximum efficiency of a screw jack with square threads and friction angle of 30° can be
A.100%
B.50%
C.33%
D.11%
Page 36 of 59