03%20-%20Physics%20-%20March%202007

03%20-%20Physics%20-%20March%202007 - Time 3 hours 03...

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Time : 3 hours 03 - Physics - March 2007 Marks : 100 Pg - 1 Instructions : 1. There are 4 Sections and total 60 questions in this question paper. 2. Symbols used in this question paper have their usual meanings. 3. Log table or simple electronic calculator can be used. 4. Write new Section on a new page. S E C T I O N A Questions 1 to 16 are multiple choice questions. Each carries ONE mark. Choose correct answer ( a, b, c, d ) from the given alternatives and write it. 16 1. The dimensions of permittivity [ ε 0 ] are ….. (Take Q as dimension of charge) ( a ) M - 1 L 3 T - 2 Q - 2 ( b ) M - 1 L - 3 T 2 Q 2 ( c ) M - 1 L 2 T - 3 Q - 1 ( d ) M 1 L - 2 T - 2 Q - 2 2. One variable capacitor is connected to a 100 V battery. If the capacitance is increased from 2 μ F to 10 μ F, then the change in energy of the above system will be ….. ( a ) 2 x 10 - 2 J ( b ) 2.5 x 10 - 2 J ( c ) 4 x 10 - 2 J ( d ) 6.5 x 10 - 2 J 3. Maximum power in a 0.5 Ω resistance connected with two batteries of 2 V emf and 1 Ω internal resistance in parallel is ( a ) 2 W ( b ) 1.28 W ( c ) 9 8 W ( d ) 3.2 W 4. A wire of 2 m is bent in the form of a circular loop. The magnetic moment of the loop when 1 A current flows through it is ….. Am 2 . 1 π π 5. Magnetization intensity for vacuum is 6. The relative permeability of a diamagnetic substance is 7. An inductor stores energy in its ….. ( a ) electric field ( b ) conducting wire ( c ) magnetic field ( d ) electric and magnetic field 8. Which of the following option for L, C and R does not give us the dimensions of frequency ? C 1 R 1
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Time : 3 hours 03 - Physics - March 2007 Marks : 100 Pg - 2 9. If the maximum value of in an electromagnetic wave is equal to 18 Vm E - 1 , then the maximum value of will be equal to B
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