[{"id":40476,"question":"Sound waves are an example of:","choices":[{"text":"Transverse waves","value":"A"},{"text":"Electromagnetic waves","value":"B"},{"text":"Longitudinal waves","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40393,"question":"The product of frequency (f) and wavelengthλ is equal to:","choices":[{"text":"Time period","value":"A"},{"text":"Amplitude","value":"B"},{"text":"Wave speed","value":"C"},{"text":"Wave energy / frequency","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40392,"question":"If a wave moves in a slinky spring with frequency of 4Hz and wave length of 0.4m, the speed of the wave will be:","choices":[{"text":"1.0 ms-1","value":"A"},{"text":"1.2 ms-1","value":"B"},{"text":"1.4 ms-1","value":"C"},{"text":"1.6 ms-1","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40391,"question":"Wave equation is defined as:","choices":[{"text":"f = Tλ","value":"A"},{"text":"f = V λ","value":"B"},{"text":"V = 2fλ","value":"C"},{"text":"V = fλ","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40390,"question":"The waves in which particles of the medium vibrate perpendicular to the direction of propagation of waves are called:","choices":[{"text":"Transverse waves","value":"A"},{"text":"Longitudinal waves","value":"B"},{"text":"Electromagnetic waves","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40389,"question":"During S.H.M acceleration of the body is maximum at:","choices":[{"text":"Mean position","value":"A"},{"text":"Extreme positions","value":"B"},{"text":"Between mean & Extereme","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40388,"question":"If the length of a simple pendulum is halved its time period will become:","choices":[{"text":"T/2","value":"A"},{"text":"T = T/√2","value":"B"},{"text":"√2T","value":"C"},{"text":"2T","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40387,"question":"The formula of time period of simple pendulum is:","choices":[{"text":"T = 2π √L/g","value":"A"},{"text":"T = 2π (L/g)","value":"B"},{"text":"T = 2π√1/g","value":"C"},{"text":"T = 1/2π √L/g","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40386,"question":"If the mass of a spring mass system is doubled, its time period becomes:","choices":[{"text":"√2 T","value":"A"},{"text":"T/2","value":"B"},{"text":"√T/2","value":"C"},{"text":"T/√2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40385,"question":"Formula for time period of spring mass system is represented by:","choices":[{"text":"T = 2π√m/k","value":"A"},{"text":"T = 2π √k/m","value":"B"},{"text":"T = 1/2π√k/m","value":"C"},{"text":"T = 1/2π√m/k","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40384,"question":"The S.I unit of Spring constant is:","choices":[{"text":"Nm","value":"A"},{"text":"N","value":"B"},{"text":"Nm-1","value":"C"},{"text":"Ns","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40383,"question":"When a body moves to and fro about a point its motion is called:","choices":[{"text":"Random motion","value":"A"},{"text":"Linear motion","value":"B"},{"text":"Vibratory motion","value":"C"},{"text":"Rotatory motion","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40382,"question":"Mathematical formula of spring constant is:","choices":[{"text":"F/x","value":"A"},{"text":"X/F","value":"B"},{"text":"F/t","value":"C"},{"text":"F/m","value":"D"},{"value":"E"}],"correctAnswer":1}]