Red spot book of MCAT Physics with 1000 MCQs. Redspot O level Physics pdf. Redspot Physics a level. Physics 1000 solved MCQs for mdcat entry test preparation.

## Red Spot Book of MCAT Physics 1000 MCQs:

Which one pair belongs to accepter impurity:
(a) Arsenic, phosphorus
(b) Boron, gallium
(c) Antimony, indium
(d) Arsenic, antimony

Reciprocal of bulk modulus is:
(a) Elasticity
(b) Young modulus
(c) Compressibility
(d) Shear modulus

Curi temperature for iron is:
(a) ‘Ok
(b) 570k
(c) 1023 k
(d) 378 k

At OK, semi conductors are:
(a) Conductors
(b). Insulators
(c) Perfect conductors
(d) Perfect insulators

In N-type material, minority charge carriers are:
(a) Free electrons
(b) Holes
(c) Protons
(d) Mesons

Which one is pentavalent impurity?
(a) boron
(b) gallium
(c) antimony
(d) indium

The Young’s modulus of steel is
(a) 2 x 10″ Nm?
(b) 3.9 ~ 10′ Nm?
(c) 2 x 10’Nm-
(d) 1.5 x 10Â°Nm

Dimensions of strain are
(a) L?
(b) ?
(c) ML”T
(d) no dimensions

When a silicon crystal is doped with a pentavalent clement, it becomes.
(a) P-type semiconductor
(b) r-type semiconductor
(c) intrinsic semiconductor
(d) extrinsic semiconductor

Best magnetic material is made up of:
(a) Alnico V
(b) Iron
(c) Nicke!
(d) Cobalt

Young’s modulus for water is:
(a) Zero
(b) 1
(c) 2
(d) 3

The SI unit of strain is:
(a) Nm
(b) Nm
(c) No unit
(d) Kgms ?

In a pure inductive A.C circuit the current:
(a) Lags behind voltage by 90Â°
(b) Leads the voltage by 90Â°
(c) In phase with voltage
(d) Leads the voltage by 270Â°

The frequency of A.C. source used in Pakistan is:
(a) 50 Hz
(b) 60 112
(c) 45 Hz
(d) 70 112

When 10V are applied to an A.C. circuit, the current Nowing in it is 100 mA, its impedance is:
(a) S052
(b) 7552
(c) 100
(d) 90 52

Power dissipated in pure inductor over a complete a.c. cycle is:
(a) Targe
(b) Small
(c) Infinite
(d) Zero

Al resonance frequency the impedance of RLC series circuit is:
(a) Zero
(b) Minimum
(c) Maximum
(d) Moderate

The value of peak to peak voltage is:
(b) -V.
(d) 2.

The peak value of A.C source is 20A, then its rms value will be
(b) 10 A
(d) 28.2 A
(a) 14.1 A
(c) 20 A

If the resistance of 5008 have fourth band of silver colour then its upper maximum resistance will be:
(b) 55082
(d) 10052

The velocity of an oscillating change as it moves to and from along a wire is:
(a) Changing
(b) Constant
(c) Intinite
(d) Zero

Specific resistance of a material depends upon:
(a) Length
(b) Area
(c) Temperature
(d) Both A&B

Heat generated by a 40 watt bulb in one hour is:
(a) 4800)
(b) 144000 J
(c). 14000)
(d) 1440)

The numerical value of black color in carbon resistors is:
(a) 0
(b)
(d) 3

In Carbon resistor, the value of Blue Colour is:
(a) 7
(b) 6
(c) 8
(d) 9

If a resistor is traversed in the opposite direction of current then the change in potential is:
(a) Zero
(b) Negative
c) Positive
(d) Constant

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