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Mdcat-past-papers - IBA - Physics Quiz

Filters: Board: IBA | Subject: Physics |
1. An electron is projected along the positive x-axis in a magnetic field lying in xz-plane. The magnetic force on the electron will act along the:



2. The magnetic flux through a loop of 1 m² in a 0.5T magnetic field is same as magnetic flux through a loop of 0.5 m² in a magnetic field of:



3. A body of mass 10 kg is falling through a viscous medium and reached terminal velocity. The net force on the body will be:



4. The value of temperature co-efficient of a conductor is zero. This indicates that with the rise in temperature, resistance of conductor:



5. The path difference between two sound waves coming from a coherent source of wavelength 50 cm at a point is 100 cm. The superposition of the waves at that point produces:



6. Potential energy decreases in the process of:



7. A diver of mass m is swimming at a depth h below the sea level. If the reference level is taken at sea level, the gravitational potential energy of the diver is:



8. A constant force F acts on a body and displaces it by distance Ad in a time dt. The rate at which force is doing work is:



9. In circular motion, if angular displacement is kept constant, decreasing the radius will:



10. When force and displacement are in opposite direction then the work done is said to be:



11. In a step-up transformer, if the secondary voltage is increased by a factor of 10, the current in secondary coil will be:



12. When a droplet reaches terminal velocity, its acceleration is:



13. Newton's original formula underestimated speed of sound in air because he:



14. The point where the electric field is zero between two opposite charge lies:



15. Consider these two vectors A=2i+3j and B=-6i+4j. The angle between these two vectors is:



16. A displacement time graph is a straight line inclined up at angle of 45° with X-axis, velocity of body according to this graph is:



17. A 150 kg car has its velocity reduced from 20 m/s to 10 m/s in 3.0 sec. How large was the average retarding force?



18. The phenomenon of interference of sound waves requires:



19. A gas expands from 1 m³ to 3 m³ at constant pressure of 2 Pa. Work done is:



20. If frequency of AC is doubled, the inductive reactance will: