A short sighted person can see distinctly only those objects which lie between 10 cm and 100 cm from him. The power of the spectacle lens required to see a distant object is
|
(a) + 0.5 D |
(b) – 1.0 D |
(c) – 10 D |
(d) + 4.0 D |
(b) – 1.0 D
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Large transformers, when used for some time, become hot and are cooled by circulating oil. The heating of transformer is due to
|
(a) Heating effect of current alone |
|
(b) Hysteresis loss alone |
|
(c) Both the hysteresis loss and heating effect of current |
|
(d) None of the above |
In an adjoining figure are shown three capacitors 
and 
joined to a battery. The correct condition will be (Symbols have their usual meanings)
|
(a) |
(b) |
|
(c) |
(d) |
Carbon, silicon and Germanium atoms have four valence electrons each. Their valence and conduction band are separated by energy band gaps represented by (Eg)C. (Eg)Si and (Eg)Ge respectively. Which one of the following relationship is true in their case
|
(a) ( |
(b) |
(c) |
(d) |
Which of the following is not the unit of self inductance
|
(a) Weber/Ampere |
(b) Ohm-Second |
(c) Joule-Ampere |
(d) Joule Ampere–2 |
Rutherford’s a - particle experiment showed that the atoms have
|
(a) Proton |
(b) Nucleus |
(c) Neutron |
(d) Electrons |
