# AIIMS MBBS 2018 Higher Questions and Answers with Solutions Part 2

Get unlimited access to the best preparation resource for competitive exams : get questions, notes, tests, video lectures and more- for all subjects of your exam.

Q: 10. In the diagram find out the current through :

Title: Q-10-Image of find out the Current Through

Description: Q-10-Image of find out the Current Through

Ans.

Solution:

Title: Q-10-1-Image of find out the Current Through

Description: Q-10-1-Image of find out the Current Through

Let so

So,

.

Q: 11. An transistor is connected in common emitter configuration in which collector supply is and the voltage drop across the load resistance of connected in the collector circuit is. If current amplification factor is , If the internal resistance of the transistor is , then which of the following options is incorrect.

Title: Q-11-The Diagram of Collector Circuit

Description: Q-11- The Diagram of Collector Circuit

Solution:

The circuit arrangement is shown in figure. Collector current,

Now

Current gain

Or

Q: 12. In a hydrogen spectrum third line of Ballmer’s series having wavelength . Find the binding energy of the ground state.

Solution:

Q: 13. A wire of some length is bent in the form of a ring of diameter 2a having self-inductance L, then L will depend upon a as:

Solution:

Now,

So,

Q: 14. What will be the position of centre of mass of a half disc as shown:

Title: Q-11-The Image of Mass of Half Disc

Description: Q-11-The Image of Mass of Half Disc

(1)

(2)

(3)

(4)

Ans. (2)

Solution:

Fact that C.O.M. of hart disk is at distance of from canter

Q: 15. In a LCR series resonating circle circuit. Give the value of average power loss:

Solution:

Average power loss

Q: 16. Find the minimum wavelength of X-rays tube emitted by X-ray tube, which is operating at . Accelerating voltage.

Solution:

Q: 17. A galvanometer gives full scale deflection of volt when acting like a voltmeter when connected in series with resistance. The same galvanometer gives . Full scale deflection when acting like an ammeter when connected with shunt resistance of value in parallel. Find out the resistance of galvanometer.

Solution:

Title: Q-17-Find out the Resistance of Galvanometer

Description: Q-17-Find out the Resistance of Galvanometer

Title: Q-17-Find out the Resistance of Galvanometer

Description: Q-17-Find out the Resistance of Galvanometer

Q: 18. A uniformly charged non conducting disc with surface charge density having radius. Then find the value of electric field intensity at a point on the perpendicular bisector at a distance of.

Title: Q-18-Image of the Non-Conducting Disc

Description: Q-18- Image of the Non-Conducting Disc

Solution:

Q: 19. Two small balls, each having equal positive charge are suspended by two insulating strings of equal length L from a hook fixed to a stand. If mass of each & total angle between the two strings is , then find the charge on each ball.

Title: Q-19-Image of find the Charge on each Ball

Description: Q-19-1-Image of find the Charge on each Ball

Solution: