Nature of Physical World and Measurement — Physics STD 11 — Question

A cylindrical tube, open at both ends has a fundamental frequency f in air. The tube is dipped vertically in water so that half of it is in water. The fundamental frequency of the air column is now …….

Unit of work done

An object is moving in a straight line with uniform acceleration, the velocity-displacement reflation is –

The ratio of energy and temperature is known as ……

A simple harmonic oscillator consist of a particle of mass m and an ideal spring with spring constant k The particle oscillates with a time period T. The spring is cut into two equal parts. If one part oscillates with the same particle, the time period will be …….

If a block of mass m lying on a frictionless inclined plane of length L height h and angle of inclination θ, then the velocity at its bottom is –

Moment of inertia of a cube about an axis passing through the center of mass and perpendicular to face is -

The numbers 3.665 and 3.635 on rounding off to 3 significant figures will give

Rotational Kinetic energy of a body is –

A box is dragged across a surface by a rope which makes an angle 45° with the horizontal. The tension in the rope is 100 N when the box is dragged 10 m. The work done is