Justify your answer.
Arrangement of particles in in three different phases of matter is shown above. Which state is represented by fig. 1?

Justify your answer. Arrangement of particles in in three different phases of matter is shown above. Which one can take the shape of its container?

Justify your answer. Arrangement of particles in in three different phases of matter is shown below. Which one of them cannot be contained in an open vessel?

In China rose arrangement of sepals is different from petals. Justify your answer in comparison with other types of arrangement.

Figure. gives the x-t plot of a particle in one-dimensional motion. Three different equal intervals of time are shown. In which interval is the average speed greatest, and in which is it the least ? Give the sign of average velocity for each interval.

Which of the following sets are empty sets? Justify your answer. (i) A={x : x^(2)=4 and 3x=9} (ii) The set of all triangles in a plane having the sum of their three angles less than 180.

Which of the following are sets? Justify your answer (i) The collection of all the months of a year begimng with the letter "J". (ii) The collection of ten most talented writers of India. (iii) A team of eleven best cricket batsmen of the world. (iv) The collectionofall boys in your class. (v) The collection of all even integers.

Which of the following are empty sets? Justify your answer. (i) Set of integer which lie between 2 and 3. (ii) Set of natural numbers that are smaller than 1. (iii) Set of odd numbers that leave remainder zero, when divided by 2.

6.A straight wire carrying a current of 12 A is bent into a semi-circular arc of radius 2.0 cm as shown in Fig. (a). Consider the magnetic field B at the centre of the arc. a . What is the magnetic field due to the straight segments? b. In what way the contribution to B from the semicircle differs from that of a circular loop and in what way does it resemble? c. Would your answer be different if the wire were bent into a semi-circular arc of the same radius but in the opposite way as shown in Fig. (b)?