Download App

Newton’s Laws of Motion — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsNewton’s Laws of Motion5 Marks
Question
A reference frame attached to the earth:
  1. Is an inertial frame by definition.
  2. Cannot be an inertial frame because the earth is revolving around the sun.
  3. Is an inertial frame because Newton's laws are applicable in this frame.
  4. Cannot be an inertial frame because the earth is rotating about its axis.
✓

Answer

  1. Cannot be an inertial frame because the earth is revolving around the sun.
  1. Cannot be an inertial frame because the earth is rotating about its axis.
Explanation:

A reference frame attached to the earth cannot be an inertial frame because the earth is revolving around the sun and also rotating about its axis.

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 "5 Marks Questions" from Newton’s Laws of Motion→Newton’s Laws of Motion — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

What is nature of electromagnetic waves? Explain propagation of wave with the help of a diagram and explain their characteristics in detail.
→
An inductor of inductance 2.00H is joined in series with a resistor of resistance $200\Omega$ and a battery of emf 2.00V. At t = 10ms, find
  1. The current in the circuit.
  2. The power delivered by the battery.
  3. The power dissipated in heating the resistor.
  4. The rate at which energy is being stored in magnetic field.
→
If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H-atom when:
  1. R = 0.1Å.
  2. R = 10 Å.
→
A conducting square loop having edges of length 2.0cm is rotated through 180° about a diagonal in 0.20s. A magnetic field B exists in the region which is perpendicular to the loop in its initial position. If the average induced emf during the rotation is 20mV, find the magnitude of the magnetic field.
→
Suppose a 'n' - type wafer is created by doping Si crystal having $5 \times 10^{28} atoms/m^3$ with 1ppm concentration of As. On the surface 200 ppm Boron is added to create ‘P’ region in this wafer. Considering $n_i = 1.5 \times 10^{16}m^{-3}.$
  1. Calculate the densities of the charge carriers in the n & p regions.
  2. Comment which charge carriers would contribute largely for the reverse saturation current when diode is reverse biased.
→
The mixture a pure liquid and a solution in a long vertical column (i.e, horizontal dimensions < < vertical dimensions) produces diffusion of solute particles and hence a refractive index gradient along the vertical dimension. A ray of light entering the column at right angles to the vertical is deviated from its original path. Find the deviation in travelling a horizontal distance d < < h, the height of the column.
→
The amount of charge that passes in time t through a cross-section of a wire is,
$Q(t) = At^2 + Bt + C.$
  1. Write the dimensional formulae for A, B and C.
  2. If the numerical values of A, B and C are 5, 3 and 1, respectively, in S.I units, find the value of the current at t = 5s.
→
The illuminance of a small area changes from 900 lumen/m$^2$ to 400 lumen/m$^2$ when it is shifted along its normal by 10cm. Assuming that it is illuminated by a point source placed on the normal, find the distance between the source and the area in the original position.
→
An eye can distinguish between two points of an object if they are separated by more than 0.22mm when the object is placed at 25cm from the eye. The object is now seen by a compound microscope having a 20D objective and 10D eyepiece separated by a distance of 20cm. The final image is formed at 25cm from the eye. What is the minimum separation between two points of the object which can now be distinguished?
→
Suppose the $19\Omega$ resistor of the previous problem is disconnected. Find the current through $P_2Q_2$ in the two situations:
  1. Both the wires move towards right.
  2. If $P_1Q_1$ moves towards left but $P_2Q_2$ moves towards right.
→