[{"id":15558,"question":"Absolute temperature can be calculated by","choices":[{"text":"Mean square velocity","value":"A"},{"text":"Motion of the molecule","value":"B"},{"text":"Both (A) and (B)","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15557,"question":"Which of the following is not thermo dynamical function?","choices":[{"text":"Enthalpy","value":"A"},{"text":"Work done","value":"B"},{"text":"Gibb's energy","value":"C"},{"text":"Internal energy","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15556,"question":"At constant volume temperature is increased then","choices":[{"text":"Collision on walls will be less","value":"A"},{"text":"Number of collisions per unit time will increase","value":"B"},{"text":"Collisions will be in straight lines","value":"C"},{"text":"Collisions will not change","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15555,"question":"The number of translation degrees of freedom for a diatomic gas is","choices":[{"text":"2","value":"A"},{"text":"3","value":"B"},{"text":"5","value":"C"},{"text":"6","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15554,"question":"Relation between pressure (P) and energy (E) of a gas is","choices":[{"text":"P = 2/3 E","value":"A"},{"text":"P = 1/3 E","value":"B"},{"text":"P = 3/2 E","value":"C"},{"text":"P = 3 E","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15553,"question":"Huygen's wave theory of light cannot explain","choices":[{"text":"Diffraction","value":"A"},{"text":"Interference","value":"B"},{"text":"Polarization","value":"C"},{"text":"Photoelectric effect","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15552,"question":"The contrast in the fringes in any interference pattern depends on","choices":[{"text":"Fringe width","value":"A"},{"text":"Intensity ratio of the sources","value":"B"},{"text":"Distance between the slits","value":"C"},{"text":"Wavelength","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15551,"question":"If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by monochromatic blue light of the same intensity","choices":[{"text":"Fringe width will decrease","value":"A"},{"text":"Fringe width will increase","value":"B"},{"text":"The fringe width will remain unchanged","value":"C"},{"text":"Fringes will become less intense","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15550,"question":"Which one of the following phenomena is not explained by Huygen's construction of wavefront?","choices":[{"text":"Refraction","value":"A"},{"text":"Reflection","value":"B"},{"text":"Diffraction","value":"C"},{"text":"Origin of spectra","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15549,"question":"Light appears to travel in straight lines since","choices":[{"text":"It is not absorbed by the atmosphere","value":"A"},{"text":"It is reflected by the atmosphere","value":"B"},{"text":"Its wavelength is very small","value":"C"},{"text":"Its velocity is very large","value":"D"},{"value":"E"}],"correctAnswer":3}]