[{"id":158782,"question":"The special theory of relatively treats the problems involving:","choices":[{"text":"Inertial frames of reference","value":"A"},{"text":"Non-inertial frames","value":"B"},{"text":"Non-accelerated frame","value":"C"},{"text":"Botha (A) and (C)","value":"D"},{"text":"Both (B) and (C)","value":"E"}],"correctAnswer":4},{"id":158780,"question":"Strictly speaking, the earth is:","choices":[{"text":"An accelerated frame of reference","value":"A"},{"text":"A non-inertial frame of reference","value":"B"},{"text":"An inertial frame of reference","value":"C"},{"text":"<sup>A non-accelerated frame of reference</sup>","value":"D"},{"text":"Both (A) and (B)","value":"E"}],"correctAnswer":5},{"id":158778,"question":"The concept of direction is purely:","choices":[{"text":"Absolute","value":"A"},{"text":"Relative","value":"B"},{"text":"Relative to stars always","value":"C"},{"text":"Relative to the sun always","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":2},{"id":120078,"question":"Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as","choices":[{"text":"ON switch","value":"A"},{"text":"off switch","value":"B"},{"text":"function switch","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120032,"question":"The energy of the 4th orbit in hydrogen atom is","choices":[{"text":"2.5 ev","value":"A"},{"text":"- 3.5 ev","value":"B"},{"text":"-0.85 ev","value":"C"},{"text":"-13.6 ev","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120030,"question":"Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of","choices":[{"text":"photoelectric effect","value":"A"},{"text":"pair production","value":"B"},{"text":"Compton effect","value":"C"},{"text":"uncertainty principle","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":120029,"question":"de-Broglies hypthesis was experimentally verified by","choices":[{"text":"Maxwell","value":"A"},{"text":"Compton","value":"B"},{"text":"Einstein","value":"C"},{"text":"Davison and Germer","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":120026,"question":"G.P. Thomson observer experimentally that electrons and neutrons possess","choices":[{"text":"particle-like properties","value":"A"},{"text":"wave-like properties","value":"B"},{"text":"neither particle nor wave like properties","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":120025,"question":"Davision and Germer performed experiment to verify","choices":[{"text":"de-Brogile hypothesis","value":"A"},{"text":"theory of relativity","value":"B"},{"text":"Newton's law of gravitation","value":"C"},{"text":"Mass-energy relation","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":120024,"question":"Wave nature of particle was proposed by","choices":[{"text":"Einstein","value":"A"},{"text":"Plank","value":"B"},{"text":"De-Brogile","value":"C"},{"text":"Max well","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120023,"question":"Momentum is a parameter associated with","choices":[{"text":"wave motion","value":"A"},{"text":"particle motion","value":"B"},{"text":"neither wave nor particle motion","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":120022,"question":"With the help of 50 K v electron microscope, a resolution of","choices":[{"text":"0.5 to 1 m to possible","value":"A"},{"text":"1 m to 10 m is possible","value":"B"},{"text":"0.5 to 1 nm is possible","value":"C"},{"text":"1 to 10 nm is possible","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120021,"question":"Which of the following phenomenon proves the particle nature of light","choices":[{"text":"interference","value":"A"},{"text":"diffraction","value":"B"},{"text":"photoelectric effect","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120020,"question":"An electron is accelerated through a potential difference of 50v. its de-Brogile wavelength is","choices":[{"text":"1.66 x 10<sup>-29</sup>m","value":"A"},{"text":"1.74 x 10<sup>-10</sup>cm","value":"B"},{"text":"17.4 x 10<sup>-6</sup>m","value":"C"},{"text":"1.74 x 10<sup>-10</sup>m","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":120019,"question":"A particle of mass 5.0 mg moves with a speed of 8.0 m/s. Its de-Brogile wavelength is","choices":[{"text":"1.66 m","value":"A"},{"text":"1.66 x 10<sup>-10</sup>m","value":"B"},{"text":"1.66 x 10<sup>-29</sup>cm","value":"C"},{"text":"1.66 x 10<sup>-29</sup>m","value":"D"},{"value":"E"}],"correctAnswer":4}]