Bihar SBTE Polytechnic Diploma first year May 2019 Basic Physics for Sem I & II General
| Sr. No. | Questions with options |
| 1 | The S.I unit for amount of substance is
(a) Mole (b) Kilogram (c) Gram (d) None of these |
| 2 | The number of significant figure is 58700 is
(a) 5 (b) 4 (c) 3 (d) 6 |
| 3 | The reciprocal of bulk modulus is called
(a) Youngs modulus (b) Modulus of rigidity (c) Compressibility (d) None of these |
| 4 | The rise of a liquid in a capillary tube does not depend upon which of the followings
(a) Angle of contact (b) Density of the liquid (c) Radius of the capillary tube (d) Atmospheric pressure |
| 5 | Viscosity is exhibited by
(a) Solids, Liquids and Gasses (b) Only Solids and Liquids (c) Only Liquids and Gases (d) Only Gases and Solids |
| 6 | Thermal conductivity of silver _____ The thermal conductivity of copper.
(a) Is less than (b) Is greater than (c) Is equal to (d) None of these |
| 7 | If the coefficient of linear expansion in solid is 0.00005, its coefficient of volume expansion is
(a) 0.0005 (b) 0.00015 (c) 0.00025 (d) 0.00020 |
| 8 | When the temperature of a gas increases in a balloon, the volume of the balloon will
(a) Increases (b) Decreases (c) Remains the same (d) None of these |
| 9 | Total internal reflection takes place if light passes
(a) From air to water (b) From water to glass (c) From glass to diamond (d) From glass to water |
| 10 | Dispersion is maximum for which?
(a) Violet colour (b) Yellow colour (c) Blue colour (d) Red colour |
| 11 | In Youngs experiment if wavelength of light is doubled, the fringe width will
(a) Remains same (b) Double (c) Half (d) Fourth |
| 12 | Which of the following is NOT a pumping process
(a) Optical pumping (b) Electrical pumping (c) Chemical pumping (d) Thermal pumping |
| 13 | Holography is done by
(a) Simple ray (b) Laser beam (c) Both of them (d) None of them |
| 14 | Which of the following is NOT a laser property?
(a) Coherence (b) Collimated (c) Extreme brightness (d) Divergence |
| 15 | The photoelectric emission is possible when the incident light has more than a certain minimum
(a) Intensity (b) Wavelength (c) Amplitude (d) Frequency |
| 16 | The kinetic energy of emitted photo electrons is always
(a) Less than the energy of the incident photon (b) Greater than the energy of the incident photons (c) Equal to the energy of the incident photons (d) None of these |
| 17 | The minimum wavelength of x-rays radiation is
(a) ve/h (b) hc/ev (c) ev/hc (d) ec/vh |
| 18 | X –rays are
(a) negatively charged particle (b) positively charged particle (c) electromagnetic radiation (d) a stream of neutrons |
| Data Collected By – K. Jeyanthi | |
| Published On – 22nd April 2022 | |
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