HSC Science इयत्ता ११ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Physics

Which one of the following physical quantities cannot be represented by a scalar?

If a particle has negative velocity and negative acceleration, its speed ______

If the velocity is `vecv = 2hati + t^2hatj - 9veck`, then the magnitude of acceleration at t = 0.5 s is ______

If an object is dropped from the top of a building and it reaches the ground at t = 4 s, then the height of the building is ______

(ignoring air resistance) (g = 9.8 ms^–2)

If one object is dropped vertically downward and another object is thrown horizontally from the same height, then the ratio of vertical distance covered by both objects at any instant t is ______

If a particle executes uniform circular motion in the xy plane in a clockwise direction, then the angular velocity is in ______

If an object is thrown vertically up with the initial speed u from the ground, then the time taken by the object to return back to the ground is ______

Define speed.

A water fountain on the ground sprinkles water all around it. If the speed of the water coming out of the fountain is v. Calculate the total area around the fountain that gets wet.

The work done by the conservative force for a closed path is ______

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then, the long piece will have a force constant of ______

Explain how the definition of work in physics is different from general perception.

Explain with graphs the difference between work done by a constant force and by a variable force.

State and explain the work-energy principle. Mention any three examples for it.

Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10 m (g = 10 m s⁻²)

The linear momentum and position vector of the planet is perpendicular to each other at _________.

According to Kepler’s second law, the radial vector to a planet from the Sun sweeps out equal areas in equal intervals of time. This law is a consequence of ___________.

State Kepler’s three laws.

State Newton’s Universal law of gravitation.

Discuss the important features of the law of gravitation.