? GTU Engineering 1st Year MCQ | Physics-2110011 Winter 2016 Sem-1

MCQ(s) of Physics (2110011) - Winter 2016 Sem-1

    • Q. 1  The high temperature stable phase of Shape Memory Alloys (SMA) is called
    • (A) Austenite
      (B) Martensite
    • (C) Nitiosite
      (D) None of these
    • (A) Austenite
    • Q. 2  ______ exhibit super plasticity
    • (A) Bio-materials
      (B) Metallic materials
    • (C) Nanomaterials
      (D) SMA
    • (C) Nanomaterials
    • Q. 3  We prefer ______ fiber for short distance communication.
    • (A) Single mode
      (B) Multi mode
    • (C) Dual mode
      (D) None of these
    • (A) Single mode
    • Q. 4  Nd-YAG LASER emittes ______ µm wavelenghth.
    • (A) 1.063
      (B) 1.062
    • (C) 1.064
      (D) 1.406
    • (C) 1.064
    • Q. 5  Material used for the production of ultrasonic waves in magnetostriction effect is
    • (A) Paramagnetic
      (B) Diamagnetic
    • (C) Ferromagnetic
      (D) Can’t say
    • (C) Ferromagnetic
    • Q. 6  Magnetic susceptibility (Xm) equals
    • (A) dipole moment per unit volume
      (B) torque per unit area
    • (C) magnetization per unit magnetic field intensity
      (D) none of these
    • (C) magnetization per unit magnetic field intensity
    • Q. 7  The metallic glasses are obtained by cooling a molten material rapidly at a rate of
    • (A) 20x1060c/s
      (B) 2x1060c/s
    • (C) 2x1040c/s
      (D) None of these
    • (B) 2x1060c/s
    • Q. 8  The polarization P in a solid dielectric is related to the electric field E and the electric flux density D by the relation
    • (A)  E=ε0D+P
      (B) D=E+ε0P
    • (C) D=ε0E+P
      (D) D=ε0(E+P)
    • (C) D=ε0E+P
    • Q. 9  Threshold of feeling is
    • (A) 100dB
      (B) 110dB
    • (C) 130dB
      (D) 120dB
    • (D) 120dB
    • Q. 10  Which of the following waves does not belong to the electromagnetic spectrum
    • (A) X-rays
      (B) Microwave
    • (C) Infrared
      (D) Ultrasonic wave
    • (D) Ultrasonic wave
    • Q. 11  Cooper pairs are formed between electrons
    • (A) of same spin
      (B) of opposite spin
    • (C) of same velocity
      (D) of different velocity
    • (B) of opposite spin
    • Q. 12  Laser beam is highly coherent so it can be used in
    • (A) Polarization
      (B) Interference
    • (C) Diffraction
      (D) Scattering
    • (B) Interference
    • Q. 13  Which of the following is the transmission frequency in optical fibre
    • (A) 1014
      (B) 1013
    • (C) 1012
      (D) 1011
    • (D) 1011
    • Q. 14  The first commercial shape memory alloy is
    • (A) NiTi
      (B) NiCd
    • (C) NiC
      (D) Cryofit
    • (A) NiTi