Model Questions for Scientific Assistant (IMD) Exam (Paper-2) PHYSICS - Set 34

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1. In alternative current generator, AC current reverses its direction

A. 20 times per second
B. 50 times per second
C. once per second
D. twice per second

2. “A current carrying coil placed in magnetic field experiences force”, device that proves this law is

A. DC generator
B. DC motor
C. AC generator
D. both a and b

3. Law stating that “force is directly proportional to product of charges and inversely proportional to square of separation between them” is called

A. newton’s law
B. coulombs law
C. gauss’s law
D. &Ohm’s law

4. Two positive charges Q1 = 16 C and Q2 = 4 C, separated by a diameter of 3 m will produce force of

A. 40 N
B. 41.1 N
C. 42.3 N
D. 42.7 N

5. Formula that describes statement of Coulomb’s law is

A. f = kQ1Q2/r2
B. f = Q1Q2/r2
C. f = kQ/r2
D. f = kQ1Q2/r

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6. Value of constant K in Coulomb’s law has value of

A. 9 × 103
B. 9 × 105
C. 9 × 107
D. 9 × 109

7. Electric charges under action of electric forces is called

A. electrostatic
B. electric flux
C. electric field
D. electric field lines

8. Intensity of sun’s radiation is about

A. 1.0 kW m-2
B. 20 kW m-2
C. 5 kW m-2
D. 8 kW m-2

9. As wave travels, intensity

A. increases
B. remains same
C. decreases
D. varies

10. Particles vibrate about their mean positions and transfer

A. frequency
B. wavelength
C. energy
D. power

Answer

1. (b) 2. (b) 3. (b) 4. (d) 5. (a) 6. (d) 7. (a) 8. (a) 9. (c) 10. (c)

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Study Kit for SSC Scientific Assistant (IMD) EXAM