All musical instruments make use of oscillations, can you identify , where ?

In a slide showing different types of cells can you identify which type of the cell may be meristematic and the one which is incapable of dividing and how?

Can you give some practical examples of oscillations in our daily life ?

Answer the following : How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?

Use your brain power! in which musical instruments can you see oscillatory motion?

Why can moving coil instruments not be used to measure alternating currents voltages

A bar magnet ,freely suspended in a magnetic induction H makes 20 oscillates per minute. When another magnet X is brought near it, the number of oscillations are found to be 10 per minute. What is the influencing induction of magnet X, in terms of H (where H >X)

Answer the following questions: An erect image of an object is formed by a spherical mirror when the object is placed at a certain distance from the mirror. Just by looking at the image, can you identify the mirror as concave or convex? Explain.

A point object is placed on the axis of a thin convex lens of focal length 0.05 m at a distance of 0.2 m from the lens and its image is formed on the axis. If the object is now made to oscillate along the axis with a small amplitude of A cm, then what is the amplitude of oscillation of the image? [you may assume, frac(1)(1 + x ~~ 1 - x , where x << 1]

Choose the correct alternative : Identify the instrument that is used for getting prior information about earthquake .

Questions based on Paragraph : Seemas and shobha's mother asked both of them to take out 3 packs of 0.5 L of milk ( all at same temperature ) kept in refigerator and boil it . Seema took 1 l of milk in vessel A and shobha took rest of the milk in vessel B of same size as that of A . both the vessels are made up of same material and kept on the flame of equal intensity : After boiling , what can you say about the temperatures and heat content of the milk in both vessels ? why ?