IPU - BTech Semester 1 - Engineering Physics (Muliple Choice Questions)
Engineering Physics
(Muliple Choice Questions)
BTech Semester 1
(a) Interference
(b) Diffraction
(c) Scattering
(d) Dispersion
② Newton’s rings are locus of points of
(a) equal inclination
(b) equal thickness
(c) both equal inclination and equal thickness
(d) equal inclination and unequal thickness
③ Single slit diffraction pattern is observed if the incident light wavefront is
(a) Elliptical
(c) Cylindrical
(b) Spherical
(d) Plane
④ The resolving power of a plane transmission grating increases with increasing
(a) Grating element only
(b) Order of the spectrum only
(c) Total number of ruling on the grating only
(d) Both order of the spectrum and total number of rulings on the grating
⑤ Which of the following waves cannot be polarized?
(a) Radiowaves
(b) Light waves
(c) Acoustic waves
(d) X-rays
⑥ The wavelengths produced by a He-Ne laser correspond to the transition in
(a) Helium
(b) Neon
(c) Both He and Ne
(d) Neither He nor Ne
⑦ The poynting vector has the same dimensions as that of
(a) Electric current density
(b) Electromagnetic power density
(c) Electric field
(d) Change density
⑧ Dielectric losses may occur due to
(a) Radio activity
(b) Polarization
(c) Ionisation
(d) Conductivity
⑨ With increase in velocity of a particle its relativistic mass
(a) Decreases very slowly
(b) Increases
(c) Sometime decreases and increases depending on the nature of the particle
(d) Decrease rapidly
⑩ Which of the following materials exhibits piezo- electric effect?
(a) Iron
(b) Aluminum
(c) Quartz
(d) Copper
Expected Answers
① (a) Interference
② (b) equal thickness
③ (d) Plane
④ (d) Both order of the spectrum and total number of rulings on the grating
⑤ (c) Acoustic waves
⑥ (a) Helium
⑦ (d) Change density
⑧ (d) Conductivity
⑨ (b) Increases
⑩ (c) Quartz
