Dhiren M Doshi Solutions for Chapter: Multiple-Choice Questions 1, Exercise 1: Multiple-Choice Questions (BASED ON PRACTICAL SKILLS IN SCIENCE)

The distance between two consecutive compressions of a sound wave is $5 \mathrm{cm}$. The wavelength of the wave is.

How can a longitudinal wave be generated in a slinky by moving its free end?

A pulse travels through a slinky $6 \mathrm{m}$ long from one end to the other end and then back again to the original position in $4 \mathrm{s}$. The velocity of the pulse in the slinky is

While doing the experiment on measuring the velocity of a pulse through a stretched string, a student had to choose between  

(i) Thick silk string and a thick cotton string.

(ii) Stop clock and a table clock.

The combination of choice that he should prefer is

Two slinkies A and B are of the same length and made up of two different materials. The time taken by $10$ pulses to travel the same distance in both of them is $80$ seconds and $70$seconds respectively. We can see that

A pulse was created in a string/slinky of length $4 \mathrm{m}$ by a group of $4$ students. They observed that it returned after reflection, at the point of creation, $6$ times in $10$ seconds. They calculated the speed as follows:

A strong transverse horizontal pulse, created at one end of the string, is observed to complete $5$ single created journeys (from one end to the other end) along its length, before fading out. The initial and final readings, on a stopwatch used in the experiment, are shown here. If the length of string is $\mathrm{L}$ metre, the speed of the pulse through the string is 

In the experiment for determining the velocity of propagation of a pulse in a slinky/string, we prefer a long slinky/string _____.