Solved Past Papers MCQs of MDCAT for the preparation of Medical and Dental College Admission Test and other medical tests.
Q.26 If a force of magnitude 8 N acts on a body in direction making an angle 30, its x and y components will be
A) Fx = 4√3 and Fy = 8 C) Fx = 4√3 and Fy = 4
B) Fx = 8 and Fy = 4√3 D) Fx = 8√3 and Fy = 4
Q.27 The sensitivity of a galvanometer can be decreased by
A) Increasing magnetic field C) Increasing c/BAN Ration
B) Increasing number of turns of the coil D) Decreasing length of couple ‘c’
Q.28 Force on a current carrying conductor in a uniform magnetic field is
A) F = NIA cos α C) F = ILB sin α
B) F = μnI D) F = ILA cos α
Q.29 If the velocity of the body changes by equal amount in equal intervals of time, the body is said to have:
A) variable acceleration C) uniform velocity
B) uniform acceleration D) negative acceleration
Q.30 For atomic hydrogen spectrum, which of the following series lies in visible region of electromagnetic spectrum?
A) Lyman series. C) Balmer series.
B) Paschen series. D) Bohr series.
Q.31 If a force of 12 N acts on a car and changes its momentum from 36 kgm/sec to 60 kgm/sec, the time during which this change occurs will be
A) 24 sec C) 12 sec
B) 2 sec D) 8 sec
Q.32 Which one of the following is a non-conservative force?
A) Electric force C) Gravitational force
B) Elastic spring force D) Frictional force
Q.33 Value of escape velocity for the surface of the earth is 11 km/sec. Its value for surface of the moon is
A) 11 km/sec C) 2.4 km/sec
B) 10.4 km/sec D) 4.3 km/sec
Q.34 On a clear day at noon, the intensity of solar energy reaching the earth’s surface is about
A) 1.0 kWm-2 C) 1.0 Wm-2
B) 1.4 kWm-2 D) 1.4 Wm-2
Q.35 When a lift is accelerated upward, the apparent weight of an object in it will be
A) Equal to its real weight C) Zero
B) Less than its real weight D) Greater than its real weight
Q.36 The moment of inertial of a thin rod is
A) 1/2 mL2 C)1/12mL
B)1/4 m3L D)1/12mL2
Q.37 A wheel of radius 1 m covers an angular displacement of 180. Its linear displacement is
A) 3.14 m C) 6.28 m
B) π rad D) 0.157 m
Q.38 Conservation of mass of fluid flow leads to
A) Bernoulli’s equation C) Equation of motion
B) Venturi meter D) Equation of continuity
Q.39 The blood vessels collapse when
A) External pressure applied becomes greater than the systolic pressure
B) External pressure applied is equal to systolic pressure
C) External pressure applied is less than the systolic pressure
D) External pressure applied is zero
Q.40 An oscillating body is at mean position at t = 0. At t = T/4 it will be at
A) Extreme position C) Between extreme and mean position
B) Mean position D) Beyond extreme position
Q.41 In a simple pendulum, the tension of the string is
A) g cos θ C) mg cos θ
B) mg sin θ D) mg
Q.42 Two sound waves having the same amplitudes are moving in the same direction are out of phase. The amplitude of the resultant wave is
A) Zero amplitude C) Difference of the amplitudes of the two waves
B) The sum of amplitude of the two waves D) Double the amplitude of either wave
Q.43 A source ‘Y’ of unknown frequency produces 4 beats with a source of 240 Hz and 8 beats with a sound of 252 Hz. Frequency of the source ‘Y’ is
A) 244 Hz C) 248 Hz
B) 236 Hz D) 246 Hz
Q.44 An organ pipe closed at one end has a length of 25 cm. Wavelength of the fundamental note is
A) 25 cm C) 100 cm
B) 50 cm D) 75 cm
Q.45 In Newton ring apparatus, at the point of contact of the lens and glass plate, the additional path difference introduced is
A) λ/4 C) λ
B) λ/2 D) λ/3
Q.46 The path difference ‘BD’ for destructive interference is
A) (m + ½) λ C) d sin θ
B) mλ D) 3λ
Q.47 In the case of a grafting spectrometer, the resolving power ‘R’ of the grating is defined as
A) λ / Δλ C) λ / λ1
B) λ / D D) N x m
Q.48 Which one of the following lights travels fastest in optical fibers?
A) Visible light C) Ordinary light
B) Ultraviolet light D) Invisible infrared light
Q.49 The value of universal gas constant is
A) 8.314 Jmol-1K-1 C) 7.23 Jmol-1K-1
B) 8.324 Jmol-1K-1 D) 1.00 Jmol-1K-1
Q.50 The turbine in a steam power plant takes steam from a boiler at 427 °C and exhausts into a low temperature reservoir at 77 °C. What is the maximum possible efficiency?
A) 50% C) 60%
B) 40% D) 70%
READ MORE:
- Solved Past Papers MCQs of MDCAT 1
- Solved Past Papers MCQs of MDCAT 2
- Solved Past Papers MCQs of MDCAT 4
