Download App

Gravitation — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsGravitation2 Marks
Question
A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in figure (11-E3). The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.
✓

Answer

We know in the thin spherical shell of uniform density has gravitational field at its internal point is zero.
At A and B point, field is equal and opposite and cancel each other so Net field is zero.
Hence, $E_A=E_B$

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 "2 Marks Questions" from Gravitation→Gravitation — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Figure shows a boy pulling a wagon on a road. List as many forces as you can which are relevant with this figure. Find the pairs of forces connected by Newton's third law of motion.
→
A cyclist speeding at 18km/ h on a level road takes a sharp circular turn of radius 3m without reducing the speed. The co-efficient of static friction between the tyres and road is 0.1. Will the cyclist slip while taking the turn? Explain.
→
A piano wire weighing 6.00g and having a length of, 90.0cm emits a fundamental frequency corresponding to the "Middle C" (v = 261.63Hz). Find the tension in the wire.
→
A car of mass 1000 kg moving with a speed of $30 \mathrm{~ms}^{-1}$ collides with the back of a stationary lorry of mass 9000 kg . (Fig.).Calculate the speed of the vehicles immediately after the collision if they remain jammed together.
→
A high jumper successfully clears the bar. Is it possible that his centre of mass crossed the bar from below it? Try it with appropriate figures.
→
Water is escaping from a vessel through a horizontal capillary tube $20cm$ long $0.2mm$ radius at a point $100cm$ below the free surface of water in the vessel. Calculate the rate of flow if coefficient of viscosity of water be $1 \times 10^{-3} Pa-s$.
→
The speed of sound wave depends on temperature but speed of light waves does not. Why?
→
The acceleration-time graph for a body is shown in the figure below. Plot the corresponding velocity-time graph.
→
Suppose you are told that the linear size of everything in the universe has been doubled overnight. Can you test this statement by measuring sizes with a metre stick? Can you test it by using the fact that the speed of light is a universal constant and has not changed? What will happen if all the clocks in the universe also start running at half the speed?
→
What do you mean by the "phases" of a substance?
→