MCAT — Quiz

MCAT Physics Mcq Questions Electrostatics

50 questions · Test your knowledge

1 Central spot of Newtons rings
2 A point source of light placed in a homogeneous medium gives rise to
3 The locus of all points in a medium having the same phase of vibration is called
4 Which one of the following is nearly monochromatic light ?
5 Two sources of light are coherent if they emit rays of
6 When crest of one wave falls over the trough of the other wave this phenomenon is known as
7 In Youngs double slit experiment the fringe spacing is equal to
8 In Young double slit experiment, if white light is used
9 The velocity of light was determined accurately by
10 The condition for constructive interference of two coherent beams is that the path difference should be
11 In an interference pattern
12 appearance of colour in thin films is due to
13 The blue colour of the sky is due to
14 A light ray traveling form rarer to denser medium suffers a phase change of
15 When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used?
16 Diffraction effect is
17 The wavelengthe of X-rays is of the order of
18 Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is
19 A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to
20 In a plane polarized light
21 Light on passing through a Polaroid is
22 Which one of the following cannot be polarized?
23 Diffarction fringes are
24 In monochromatic red light a blue book will probably appear to be
25 A thing that emits its own light is
26 In double slit experiment if one of the two slit is covered then
27 gives the definition of metre in terms of wavelength of red cadmium light
28 In Michelson interferometer to switch the fringe from bright to dark the mirror should be displaced through
29 In the shadow of a ball the central portion appears bright that happens due to
30 Which experiment shows that wavelength of light is smaller than that of sound
31 Crystals of a material can behave as
32 When we rub a glass rod with a silk cloth then
33 If the distance between the two point charges become half then force between them becomes
34 The minimum charge on any object cannot be less than
35 Electric charge of 100 ?C is 13cm apart from another charge 16.9?C electric force between them is
36 Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will
37 Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become
38 The force per unit charge is know as
39 An electric field can deflect
40 An electric charge at rest produces
41 Tick the only wrong statement.
42 Electric intensity being a vector quantity always points
43 Electric flux linked with a surface will be maximum when
44 A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
45 The electric lines of force are
46 Tick the correct statement
47 If free space between the plates of a capacitor is replaced by a dielectric
48 Two similar charges each of one coulomb placed in air one meter apart repel each other with a force
49 A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be
50 The metallic spheres A and B of radii 2m and 4m respectively carry the same charge 4 x 10 8C. If the spheres are connected by a copper wire
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