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

In hot summer after a bath, the body’s __________.

‘An object contains more heat’- is it a right statement? If not why?

Define one mole.

Explain the meaning of heat and work with suitable examples.

A particle of mass m is moving with speed u in a direction which makes 60° with respect to the x-axis. It undergoes elastic collision with the wall. What is the change in momentum in x and y direction?

Write down the postulates of the kinetic theory of gases.

A transverse wave moves from a medium A to a medium B. In medium A, the velocity of the transverse wave is 500 ms^-1 and the wavelength is 5 m. The frequency and the wavelength of the wave in medium B when its velocity is 600 ms^-1, respectively are:

What is meant by waves?

Write down the types of waves.

What are transverse waves? Give one example.

What are longitudinal waves? Give one example.

Define wavelength.

Write down the relation between frequency, wavelength and velocity of a wave.

Sketch the function y = x + a. Explain your sketch.

Discuss how ripples are formed in still water.

Consider two organ pipes of the same length in which one organ pipe is closed and another organ pipe is open. If the fundamental frequency of closed pipe is 250 Hz. Calculate the fundamental frequency of the open pipe.

Consider the following function-

1. y = x² + 2 α tx
2. y = (x + vt)²

which among the above function can be characterized as a wave?

Why is it that transverse waves cannot be produced in a gas? Can the transverse waves be produced in solids and liquids?

Is it possible to realize whether a vessel kept under the tap is about to fill with water?

What is meant by periodic motion? Give any two examples, for periodic motion.