MCQs AMU-medical Paper

Q1. The OR gate follows the Boolean expression, for A and B as two input variables and Y as output :

1. A + B = Y
2. A B = Y
3. A = Y
4. None of these

Answer: A

Q2. If the two interfering beams have intensities in the ratio of 9 : 4. The ratio of intensities of maxima and minima in the interference pattern will be :

1. 4 : 9
2. 3 : 4
3. 1 : 25
4. 25 : 1

Answer: D

Q3. The charge of an electron is 1.6 x 10-19 C. How many electrons strike the screen of cathode ray tube each second, when the beam current is 16 m A ?

1. 10 -19
2. 10 -17
3. 10 18
4. 10 17

Answer: B

Q4. A 500 kg horse pulls a cart of mass 1500 kg along a level road with an acceleration of 1 m/ s 2 . If the coefficient of sliding friction 0.2. The horizontal force exerted by the earth on the horse is :

1. 6000 N
2. 5000 N
3. 4000 N
4. 3000 N

Answer: A

Q5. A 1.0 kg ball falls vertically on to the floor with a speed of 25 m/s. It rebounds with an initial speed of 10 m/s. Find the restitution coefficient and the impulse acting on the ball during contact, if the ball is in contact for 0.02 s. What is average exerted force on the floor ?

1. 0.1, 55 kg m/S, 1550 N
2. 0.2, 45 kg m/s 1650 N
3. 0.3, 30 kg m/s, 1550 N
4. 0.4, 35 kg m/s, 1750 N

Answer: D

Q6. A substance reduces to 1/16th of its original mass in 2 h. The half-life period of the substance will be :

1. 120 min
2. 60 min
3. 30 min
4. 15 min

Answer: C

Q7. If the distance between the conduction band and valence band is 1 eV. This combination is :

1. semiconductor
2. conductor
3. metal
4. insulator

Answer: A

Q8. In a nuclear fission reaction :

1. A heavy nuclei breaks by itself
2. A heavy nuclei bombarded by thermal neutrons break up
3. A light nucleus bombarded by thermal neutrons break up
4. The light nucleus combine to Produce a heavier nucleus

Answer: A

Q9. In 1865 the existance of electromagnetic waves was predicted by :

1. Maxwell
2. Hertz
3. Bose
4. Marconi

Answer: A

Q10. The Wavelength of the first member of the Balmer series of hydrogen spectrum is 6563 A. Calculate the wavelength of second member of the Paschen series in the same spectrum :

1. 8563 A
2. 10818 A
3. 6409 A
4. 12818 A

Answer: D