1. A field in which the work is done in a moving body along a closed path is zero is called.

A. Electric field.

B. Conservative field.

C. Electromagnetic field.

D. Energy field.

E. None of these.

2. A wire of diameter 55m is to be measured with the help of a screw gauge which has its main scale least count as 1 mm. The minimum number of circular scale divisions is-

A. 100

B. 200

C. 50

D. 500

E. None of these

3. An electromagnetic wave having amplitude of electric field component is 30 V/m enters in a glass slab which has refractive index 1.5. If 4% of the incident light is reflected from glass-air interface, then find amplitude of electric field component of refracted wave.

A. 30 V/m

B. 36 V/m

C. 40 V/m

D. 44 V/m

E. None of these

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