Home
Class 11
PHYSICS
A piece of cork starts from rest at the ...

A piece of cork starts from rest at the bottom of a lake and floats up. Its velocity v is plotted against time t. Which of the following best represents the resulting curve?

Text Solution

Verified by Experts

The correct Answer is:
A
As the cork moves up, the force due to buoyancy remains constant. As its speed increases, the retardig force due to viscosity increases, being proportional to the speed. Thus the acceleration gradually decreases.
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 1 (Elasticity)|16 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 1 (Surface Tension)|21 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

  • ERROR AND MEASUREMENT

    ALLEN|Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

The rate of decay (R ) of nuclei in a radioactive sample is plotted against time (t). Which of the following best represents the resulting curve ?

The rate of decay (R ) of nuclei in a radioactive sample is plotted against time (t) . Which of the following best represents the resulting curve ?

A square, conducting loop falls from rest in the xy-plane. There is a uniform magnetic field in the z-direction below the x-axis. The velocity v of the loop is plotted against time t. Which of the following best represents the resulting curve

A ray of light travels from a medium of refractive index mu to air. Its angle of incidence in the medium is i , meansured from the normal to the boundary , and its angle of deviation is delta. delta is plotted against i . Which of the following best represents the resulting curve ?

An ideal cell is connected to a capacitor through a voltmeter. The reading V of the voltmeter is plotted agains time. Which of the following best represents the resulting curve?

Which of the following P-V curve best represents. As isothermal process?

A railway engine whistling at a constant frequency moves with a constant speed. It goes past a stationary observer standing beside the railway track. The frequency (n) of the sound heard by the observer is plotted agains time (t) . Which of the following best represents the resulting curve?

A thin, straight conductor lies along the axis of a hollow conductor of radius R . The two carry equal currents in the same direction. The magnetic field B is plotted against the distance r from the axis. Which of the following best represents the resulting curve?