Question
A collision experiment is done on a horizontal table kept in an elevator. Do you expect a change in the results if the elevator is accelerated up or down because of the noninertial character of the frame?

Answer

Velocity and mass are only two components that affect collision between two bodies so in this change in acceleration due to gravity will not affect the collision between two bodies. (if kept horizontally)

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

The charge enclosed by a spherical Gaussian surface is $8.85 \times 10^{-8}$ Coulomb. Calculate (a) the electric flux emerging out of the Gaussian surface, (b) what will be the change in electric flux if the radius of the Gaussian surface is doubled?
Find the acceleration due to gravity of the moon at a point $1000\ km$ above the moon's surface. The mass of the moon is $7.4 \times 10^{22}kg$ and its radius is $1740\ km.$
When a fat person tries to touch his toes, keeping the legs straight, he generally falls. Explain with reference to figure.
Out of the two magnetic materials, 'A' has relative permeability slightly greater than unity while oB' has less than unity. Identify the nature of the materials 'A' and 'B'. Will their susceptibilities be positive or negative?
Draw the graph of deviation angle $(\delta)$ versus incidence angle $(i)$ and derive the formula for refractive index $n_{21}=\frac{\sin \left(\frac{A+D_m}{2}\right)}{\sin \left(\frac{A}{2}\right)}$ for the material of prism.
Two long bar magnets are placed with their axes coinciding in such a way that the north pole of the first magnet is 2·0cm from the south pole of the second. If both the magnets have a pole strength of 10A-m, find the force exerted by one magnet on the other.
A player hits a baseball at some angle. The ball goes high up in space. The player runs and catches the ball before it hits the ground. Which of the two (the player or the ball) has greater displacement?

The magnetic field lines of the earth resemble that of a hypothetical magnetic dipole located at the centre of the earth. The axis of the dipole is presently tilted by approximately $11.3^\circ$ with respect to the axis of rotation of the earth.

The pole near the geographic North pole of the earth is called the North magnetic pole and the pole near the geographic South pole is called South magnetic pole.
  1. Magnetization of a sample is:
  1. $10^5T$
  2. $10^{-6}T$
  3. $10^{-5}T$
  4. $10^8T$
  1. A bar magnet is placed North-South with its North$-$pole due North. The points of zero magnetic field will be in which direction from centre of magnet?
  1. North$-$South
  2. East$-$West
  3. North$-$East and South$-$West
  4. None of these.
  1. The value of angle of dip is zero at the magnetic equator because on it:
  1. $V$ and Hare equal.
  2. The values of $V$ and $H$ zero.
  3. The value of $V$ is zero.
  4. The value of His zero.
  1. The angle of dip at a certain place, where the horizontal and vertical components of the earth's magnetic field are equal, is:
  1. $30^\circ$
  2. $90^\circ$
  3. $60^\circ$
  4. $45^\circ$
  1. At a place, angle of dip is $300.$ lf horizontal component of earth's magnetic field is $H$, then the total intensity of magnetic field will be.
  1. $\frac{\text{H}}{2}$
  2. $\frac{2\text{H}}{\sqrt{3}}$
  3. $\text{H}\sqrt{\frac{3}{2}}$
  4. $2\text{H}$
Draw a labelled diagram of an a.c. generator. Obtain the expression for the emf induced in the rotating coil of N turns each of cross-sectional area A in the presence of a magnetic field $\overrightarrow{ B }$.

Solar cell is a p-n junction diode which converts solar energy into electric energy. It is basically a solar energy converter. The upperlayer of solar cell is of p-type semiconductor and very thin so that the incident light photons may easily reach the p-n junction. On the top face of p-layer, the metal finger electrodes are prepared in order to have enough spacing between the fingers for the lights to reach the p-n junction through p-layer.
  1. The schematic symbol of solar cell is:
  1. The p-n junction which generates an emf when solar radiations fall an it, with no external bias applied, is a:
  1. Light emitting diode.
  2. Photodiode.
  3. Solar cell.
  4. None of these.
  1. For satellites the source of energy is:
  1. Solar cell.
  2. Fuel cell.
  3. Edison cell.
  4. None of these.
  1. Which of the following material is used in solar cell?
  1. Barium.
  2. Silicon.
  3. Silver.
  4. Selenium.
  1. The efficiency of a solar cell may be in the range:
  1. 2 to 5%
  2. 10 to 15%
  3. 30 to 40%
  4. 70 to 80%