Which one of the folloiwng is/are correct.
\r\n","choices":[{"text":"Work is positive if 0< 90o
\r\n","value":"A"},{"text":"Work is 0 if
Work is negative if
All of these
\r\n","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1065940,"question":"The dimension of power
\r\n","choices":[{"text":"[ML2 T-3]
\r\n","value":"A"},{"text":"[ML-1T-1]
\r\n","value":"B"},{"text":"[ML2T2]
\r\n","value":"C"},{"text":"[ML-2T-4]
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065939,"question":"Absolute P.E. of a body of mass"m" at a distance"r" from earth centre is.
\r\n","choices":[{"text":"[-GM/r]
\r\n","value":"A"},{"text":"- Gr/ M
\r\n","value":"B"},{"text":"-Gmr
\r\n","value":"C"},{"text":"GmM /r
\r\n","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1065938,"question":"1 kilowatt is equal =
\r\n","choices":[{"text":"1000 J /s
\r\n","value":"A"},{"text":"106 watt
\r\n","value":"B"},{"text":"0.1 x 103 Watt
\r\n","value":"C"},{"text":"6.25 x 10 25 Watt
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065937,"question":"If P = pressure, Deltat V = change in volume, P Delta V represents
\r\n","choices":[{"text":"Work
\r\n","value":"A"},{"text":"Density
\r\n","value":"B"},{"text":"Power
\r\n","value":"C"},{"text":"Temperature
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065936,"question":"The kinetic energy acquired by a distance from rest under eh action of a constant fore is directly proportinal to.
\r\n","choices":[{"text":"m
\r\n","value":"C"},{"text":"Independent of m
\r\n","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065557,"question":"Kilowatt hour is unit is.
","choices":[{"text":"Power
","value":"A"},{"text":"Work
","value":"B"},{"text":"Force
","value":"C"},{"text":"Momentum
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065554,"question":"Ratio of dimension of power and K.E. is.
","choices":[{"text":"1 : 1
","value":"A"},{"text":"T : 1
","value":"B"},{"text":"1 : T
","value":"C"},{"text":"M : T
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065553,"question":"If the velocity of the body becomes double and mass become half thenints K.E.
","choices":[{"text":"Becomes double
","value":"A"},{"text":"Beocmes for time
","value":"B"},{"text":"In halved
","value":"C"},{"text":"Becomes eight time
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065552,"question":"Two bodies A and B of mass 1 kg and 2 kg respectively have same momentum. Which one has greater KE.
","choices":[{"text":"Cannot be determined
","value":"A"},{"text":"A
","value":"B"},{"text":"B
","value":"C"},{"text":"Both hae the same K.E.
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065551,"question":"A man carries a bucket of water of 1 kg for 10m height then work done is.
","choices":[{"text":"15 J
","value":"A"},{"text":"10 j
","value":"B"},{"text":"98 J
","value":"C"},{"text":"2.5 J
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065550,"question":"A body of mass 0.2 kg initially moving with velocity 10 m/s comes to rest in 1 m. how much retarding force acts on it.
","choices":[{"text":"10 N
","value":"A"},{"text":"20 N
","value":"B"},{"text":"40 N
","value":"C"},{"text":"200 N
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065549,"question":"Work done on a body for increasing velocity results in.
","choices":[{"text":"Change in K.E.
","value":"A"},{"text":"Change in gravitational P.E.
","value":"B"},{"text":"Change in electric P.E.
","value":"C"},{"text":"All
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065548,"question":"Which of the following is non conservative force.
","choices":[{"text":"Elastic spring force
","value":"A"},{"text":"Electric force
","value":"B"},{"text":"Gravitational force
","value":"C"},{"text":"Tension in string
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1065547,"question":"Escape velocity depends upon.
","choices":[{"text":"Mass of the body
","value":"A"},{"text":"Radius of the body
","value":"B"},{"text":"Radius of the planet
","value":"C"},{"text":"Radius of the Earth
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065546,"question":"Th dimension of powr is.
","choices":[{"text":"[ML2 T-3]
","value":"A"},{"text":"[ML-1T-1]
","value":"B"},{"text":"[ML2T2]
","value":"C"},{"text":"[ML-2T-4]
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065545,"question":"Power can be defined as the scalar product of.
","choices":[{"text":"force and displacemnt
","value":"A"},{"text":"Force and velocity
","value":"B"},{"text":"Force and time
","value":"C"},{"text":"Force and mass
","value":"D"},{"value":"E"}],"correctAnswer":2}]