Read the following paragraph and answer the following questions : Resistance and resistivity are two important terms in electricity, the resistance is the property of aconductor which changes when size or shape of conductor is changed,on the other hand resistivity isthe property of material which changes only when nature of conductor is changed.(i) Two conductors of same material are taken having lengths 2m and 4m respectively then resistivityof conductors becomes: 1a) Two times of initial b) four times of initialc) remains same d) zero(ii) Resistance of a conductor changes when: 1a) nature of material changes b) length of conductor changesc) potential difference changes d) current changes(iii) The unit of resistivity is given by: 1a) ohm b) meter c) ohm meter d) ampere(iv) If the temperature is increased then : 1a) resistivity increases b) resistance decreasesc) resistance increases d) resistivity decreases​