MDCAT PHYSICS 2009 PART 3 QUIZ ONLINE

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PAST PAPER PHYSICS UHS MDCAT 2009 TEST NO 3 MCQS ONLINE QUIZ

Q.41 A body of mass 6 g falls under action of gravity. At initial position ‘A’ its P.E. is 480 J and K.E. is 0 J. During its downward journey at point ‘B’ its energies will be (g = 10 ms-2):

1 point

A) P.E. = 300 J and K.E. = 180 J

B) P.E. = 180 J and K.E. = 300 J

C) P.E. = 230 J and K.E. = 250 J

D) P.E. = 250 J and K.E. = 230 J

Clear selection

Q.42 A tiny droplet of oil of density ‘ρ’ and radius ‘r’ falls through air under force of gravity. If viscosity of air is ‘η’, the terminal velocity acquired by the oil drop is given by:

1 point

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Q.43 Torricelli’s theorem be written as: see question in previous image

1 point

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Q.44 When the spaceship rotates with ________ frequency, the artificial gravity like earth is produced to inhabitants of the ship: OPTIONS ARE GIVEN IN ABOVE IMAGE

1 point

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Q.45 In a microwave oven, the wave produced has a wavelength of 12 cm at a frequency of:

1 point

A) 2452 Hz

B) 2456 Hz

C) 2455 Hz

D) 2450 Hz

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Q.46 Speed of the waves is equal to:

1 point

A) fλ

B) λ/T

C) Both A and B

D) λT

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Q.47 A particle carrying charge of 2e falls through a potential difference of 3.0 V. Calculate the energy required by it:

1 point

A) 9.6 x 10-19 J

C) 1.6 x 10-19 J

D) 6.0 x 10-19 J

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Q.48 The deviation of I-V graph from the straight line is due to:

1 point

A) Decrease in temperature and decrease in resistance

B) Increase in temperature and increase in resistance

C) Decrease in temperature and increase in resistance

D) Increase in temperature and decrease in resistance

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Q.49 The fractional change in resistance per Kelvin is known as:

1 point

A) Temperature coefficient of resistance

B) Thermal coefficient

C) Linear coefficient of expansion

D) Volumetric coefficient of expansion

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Q.50 The energy supplied by the cell to the charge carriers is derived from the conversion of:

1 point

A) Heat energy into Electrical energy

B) Chemical energy into Electrical energy

C) Solar energy into Electrical energy

D) Mechanical energy into Electrical energy

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Q.51 Force experienced by a moving change in a magnetic field is:

1 point

A) F = BA cosϴ

B) F = μo NI

C) F = q (v x B)

D) F = I (L x B)

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Q.52 The value of permeability of free space μo is:

1 point

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Q.53 What shunt resistance must be connected across a Galvanometer of 20 Ω resistance which gives full scale deflection with 2.0 A current, so as to convert it into an Ammeter of range 10 A?

1 point

A) 5 Ω

B) 2 Ω

C) 3 Ω

D) 4 Ω

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Q.54 The current measuring part of the Avometer consists of number of low resistances connected:

1 point

A) At an angle of 180° with the galvanometer

B) Parallel with the galvanometer

C) At an angle of 45° with the galvanometer

D) Perpendicular to the galvanometer

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Q.55 A charge of two micro coulombs (2 μC) moves with velocity of two meter per second (2 m/sec) in the direction of two Tesla magnetic field. The force that will act on it will be:

1 point

A) 2 N

B) Zero

C) 8 N

D) 4 N

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Q.56 We have two coils placed close to each other. When we switch on the battery connected to primary coil while keeping the sliding contact of rheostat at fixed position, the reading of Galvanometer:

1 point

A) First increases and then becomes zero

B) First increases and then becomes constant at some value

C) By stopping the flow of Eddy currents

D) Using material of the core whose hysteresis area is large

Option 5

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Q.57 Power losses in a transformer can be minimized:

1 point

A) By increasing turn ratio

B) By decreasing turn ratio

C) By stopping the flow of Eddy currents

D) Using material of the core whose hysteresis area is large

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Q.58 In R-L Series circuit, the phase difference between applied voltage and current is given by the angle ϴ which is:

1 point

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Q.59 Frequency of L-C circuit will resonate under the driving action of the antenna by angular value of:

1 point

A) Capacitance

B) Impedance

C) Inductance

D) Resistance

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Q.60 To convert the Si crystal into p-type semi-conductor, which group element will be doped:

1 point

A) Trivalent Element

B) Second Group Element

C) Fourth Group Element

D) Pentavalent Element

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