HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Define weight

Why is there no lunar eclipse and solar eclipse every month?

How will you prove that Earth itself is spinning?

Derive the expression for the moment of inertia of a uniform ring about an axis passing through the centre and perpendicular to the plane.

Derive the expression for the moment of inertia of a uniform disc about an axis passing through the centre and perpendicular to the plane.

State and prove parallel axis theorem.

State and prove perpendicular axis theorem.

A uniform rod of mass m and length l makes a constant angle θ with an axis of rotation that passes through one end of the rod. Find the moment of inertia about this axis.

Find the moment of inertia of a hydrogen molecule about an axis passing through its centre of mass and perpendicular to the inter-atomic axis. Given: mass of hydrogen atom 1.7 × 10^-27 kg and interatomic distance is equal to 4 × 10-¹⁰ m.

Explain in detail the idea of weightlessness using the lift as an example.

Derive an expression for escape speed.

Derive the time period of the satellite orbiting the Earth.

Derive an expression for the energy of satellite.

Explain in detail the geostationary and polar satellites.

In the following, what are the quantities which that are conserved?

If the Earth has no tilt, what happens to the seasons of the Earth?

An unknown planet orbits the Sun with a distance twice the semi-major axis distance of the Earth’s orbit. If the Earth’s time period is T₁, what is the time period of this unknown planet?

Four particles, each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. Calculate the speed of each particle.

A small sphere of radius 2 cm falls from rest in a viscous liquid. Heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity is proportional to

With an increase in temperature, the viscosity of liquid and gas, respectively will __________.