MCQ
Electric flux per unit solid angle is defined as:
  • A
    Electric force
  • B
    Electric field intensity
  • C
    Electric potential
  • D
    Electric power

Answer

  1. Electric field intensity

Explanation:

Electric field intensity is the strength of an electric field at any point. It is equal to the electric force per unit charge experienced by a test charge placed at that point.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A line passing through places having zero value of magnetic dip is called

(a) Isoclinic line

(b) Agonic line

(c) Isogonic line

(d) Aclinic line

In order to obtain a real image of magnification 2  using a converging lens of focal length 20 cm, where should an object be placed

(a) 50 cm

(b) 30 cm

(c) – 50 cm

(d) – 30 cm

Ultraviolet light of wavelength 300 nm and intensity 1.0 watt/m2 falls on the surface of a photosensitive material. If 1% of the incident photons produce photoelectrons, then the number of photoelectrons emitted from an area of 1.0 cm2  of the surface is nearly

(a) 9.61  per sec

(b) 4.12  per sec

(c) 1.51  per sec

(d) 2.13  per sec

A galaxy is observed to be moving with a velocity of 8600 km-sec–1. If it is at a distance of 430 million light year from us, Hubble constant and corresponding age of the universe are respectively

(a) 2 , 1.49

(b) 2 , 1.58

(c)

(d) None of these

A very small magnet is placed in the magnetic meridian with its south pole pointing north. The null point is obtained 20cm away from the centre of the magnet. If the earth¢s magnetic field (horizontal component) at this point be 0.3 gauss, the magnetic moment of the magnet is:

A plane electromagnetic wave is incident on a material surface. If the wave delivers momentum p and energy E, then

(a) p = 0, E = 0

(b) p ¹ 0, E ¹ 0

(c) p ¹ 0, E = 0

(d) p = 0, E ¹ 0

In a cyclotron, a charged particle:

In order to increase the angular magnification of a simple microscope, one should increase:

For skywave propagation of a 10 MHz signal, what should be the minimum electron density in ionosphere

(a) ~ 1.2  

(b) ~  

(c) ~  

(d) ~  

The largest distance between the interatomic planes of a crystal is 10-7cm. The upper limit for the wavelength of X-rays which can be usefully studied with this crystal is

(a) 1 Å

(b) 2 Å

(c) 10 Å

(d) 20 Å