Laws of Motion — Physics STD 11 Science — Question

A sphere of radius 1.00cm is placed in the path of a parallel beam of light of large aperture. The intensity of the light is 0.5W/cm^-2. If the sphere completely absorbs the radiation falling on it, find the force exerted by the light beam on the sphere.

Can the image formed by a simple microscope be projected on a screen without using any additional lens or mirror?

A long solenoid is fabricated by closely winding a wire of radius 0.5mm over a cylindrical nonmagnetic frame so that the successive turns nearly touch each other. What would be the magnetic field B at the centre of the solenoid if it carries a current of 5A?

A container of area 0.02m² is filled with water. Find the pressure at the bottom of the container if a weight is placed on the piston. (as shown in the figure).

Read each statement below carefully and state, with reasons, if it is true or false:
The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.

The amplitude of a harmonic oscillator is doubled. How does its energy change?

In a isothermal, homogeneous and isobaric processes, in which process is the value of work done for the same volume change more?

State the conditions when motion of a particle can be an SHM.

Explain why the speed of a whirl wind in a tornado is alarmingly high.

Can a body have constant speed but a varying velocity?