Download App

Magnetism And Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMagnetism And Matter2 Marks
Question
Answer the following questions regarding earth’s magnetism:
A vector needs three quantities for its specification. Name the three independent quantities conventionally used to specify the earth’s magnetic field.
✓

Answer

The three independent quantities conventionally used to specify the earth's magnetic field are :
  1. Magnetic declination.
  2. Angle of dip and.
  3. Horizontal component of earth's magnetic field.

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

Explore more

More "Short Answer Type Questions [2M]" from Magnetism And Matter→Magnetism And Matter — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

When are two objects just resolved? Explain. How can the resolving power of a compound microscope be increased? Use relevant formula to support your answer.
→
Can a vector have zero component along a line and still have nonzero magnitude?
→
A single lens is mounted in a tube. A parallel beam enters the tube and emerges out of the tube as a divergent beam. Can you say with certainty that there is a diverging lens in the tube?
→
Calculate the amount of heat radiated per second by a body of surface area 12cm2 kept in thermal equilibrium in a room at temperature 20°C. The emissivity of the surface = 0.80 and $\sigma=6.0\times10^{-8}\text{Wm}^{-2}\text{K}^{-4}.$
→
In a resonance column experiment, a tuning fork of frequency 400Hz is used. The first resonance is observed when the air column has a length of 20.0cm and the second resonance is observed when the air column has a length of 62.0cm.
  1. Find the speed of sound in air.
  2. How much distance above the open end does the pressure node form?
→
Calculate the bulk modulus of air from the following data about a sound wave of wavelength 35cm travelling in air. The pressure at a point varies between $(1.0\times10^5\pm14)$ Pa and the particles of the air vibrate in simple harmonic motion of amplitude 5.5 × 10-6m.
→
How are infrared waves produced? Why are these referred to as 'heat waves'? Write their one important use.
→
The force on a charged particle due to electric and magnetic fields is given by $\overrightarrow{\text{F}}=\text{q}\overrightarrow{\text{E}}+\text{q}\overrightarrow{\text{v}}\times\overrightarrow{\text{B}}.$ Suppose $\overrightarrow{\text{E}}$ is along the X-axis and $\overrightarrow{\text{B}}$ along the Y-axis. In what direction and with what minimum speed v should a positively charged particle be sent so that the net force on it is zero?
→
What is called equipotential surface? Draw equipotential surfaces for point charges and write their properties.
→
A copper wire of diameter 1.6 mm carries 20A. Find the maximum magnitude of the magnetic field $\overrightarrow{\text{B}}$ due to this current.
→