MCQ
The force that a unit positive charge would experiences if placed at that point is called as _____ due to charge at a point in space.
- AElectric charge.
- BElectric field.
- CBoth a and b.
- DNone.
✓
Answer
- Electric field.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
he half-life of a radioactive substance is 48 hours. How much time will it take to disintegrate to its 
th part
|
(a) 12 h |
(b) 16 h |
(c) 48 h |
(d) 192 h |
A light wave has a frequency of 4 
Hz and a wavelength of 5
meters in a medium. The refractive index of the medium is
|
(a) 1.5 |
(b) 1.33 |
(c) 1.0 |
(d) 0.66 |
Ray optics is valid when characteristic dimensions are:
A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be
|
(a) + 2.0 D |
(b) – 1.0 D |
(c) + 1.0 D |
(d) – 0.5 D |
Mark the correct options:
Broadcasting antennas are generally
|
(a) Omnidirectional type |
(b) Vertical type |
(c) Horizontal type |
(d) None of these |
The contact force exerted by a body A on another body B is equal to the normal force between the bodies. We conclude that:
- The surfaces must be frictionless.
- The force of friction between the bodies is zero.
- The magnitude of normal force equals that of friction.
- The bodies may be rough but they don't slip on each other.
Work of electric motor is
|
(a) To convert ac into dc |
(b) To convert dc into ac |
|
(c) Both (a) and (b) |
(d) To convert ac into mechanical work |
Four charges +Q, -Q, +Q, -Q are placed at the corners of a square taken in order. At the centre of the square
|
(a) E = 0, V = 0 |
(b) E = 0, V ≠ 0 |
(c) E ≠ 0, V = 0 |
(d) E = 0, V ≠ 0 |
Image is formed for the short sighted person at
|
(a) Retina |
(b) Before retina |
|
(c) Behind the retina |
(d) Image is not formed at all |