Bihar SBTE Polytechnic Diploma first year Dec 2019 Basic Physics for Sem I & II General
| Sr. No. | Questions with options |
| 1 | At same pressure and in same tube oil flow is lesser than water flow due to
(a) Oil has less density than water (b) Oil has grater viscosity than water (c) Water has less density than oil (d) None of these |
| 2 | Which one of the following is correct
(a) fluid in turbulent motion becomes stream line flow on increasing velocity (b) fluid is stream line flow cut the locus (c) fluid is in stream lines flow do not cut the locus one another (d) none of these |
| 3 | Speed of light in rarer medium is _____that of in denser
(a) smaller (b) greater (c) equal (d) none of these |
| 4 | Refractive index of a material depends upon
(a) temperature (b) wavelength (c) natural of material (d) all of these |
| 5 | Which statement is TRUE?
(a) Larger the wavelength narrower the fringe width (b) Larger the wavelength larger the fringe width (c) Fringe width does not depend upon wavelength (d) All of the above |
| 6 | Newton’s ring appears due to of light
(a) Diffraction (b) Reflection (c) Total internal reflection (d) Interference |
| 7 | When source of light is at infinity the wave font is
(a) Cylindrical (b) Plane (c) Spherical (d) None of these |
| 8 | Which statement is TRUE
(a) Amplitude is directly proportional to intensity (b) Intensity is inversely proportional to amplitude (c) Intensity is directly proportional to the square of amplitude (d) None of the above |
| 9 | Coherent of light means
(a) Waves are in different phase (b) Waves are in 90 degree phase difference (c) Waves are in same phase (d) None of these |
| 10 | Intensity of laser beam is
(a) Less than the intensity of ordinary visible ray (b) Larger than the intensity of ordinary visible ray (c) Negligible small (d) Fluctuating with time to time |
| 11 | In the theory of production of LASER pumping means
(a) Pumping of air (b) Pumping of water (c) Pumping of proton (d) Pumping of electron |
| 12 | In photo electrical effect which statement is TRUE
(a) Photon comes out from the metallic surface (b) Proton comes out from the metallic surface (c) Electron comes out from the metallic surface (d) None of these |
| 13 | Work function means
(a) The payment of a labour about his work (b) Work done by the applied force (c) The minimum energy required to free the electron (d) None of these |
| 14 | In the production of x-ray the target plane is ______ to the path of electron beam.
(a) 45 degree (b) 90 degree (c) 180 degree (d) None of these |
| 15 | Which of the following can be deflected by magnetic field?
(a) X-ray (b) Ultra violet rays (c) Radio wave (d) Beta rays |
| Data Collected By – K. Jeyanthi | |
| Published On – 22nd April 2022 | |
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