IAT_NEST Physics MCQ Practice

Practice Questions

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Q1SingleMarks: 4.00Negative: -1.00

Mass m1 with speed vi sticks to stationary m2 with common speed vf. Find energy lost.

A. (1/2)m1vi²[1-m1/(m1+m2)]B. (1/2)m2vi²[1-m1/(m1+m2)]C. (1/2)(m1+m2)(vi-vf)²D. (1/2)m1vi²[1-m2/(m1+m2)]

Q2SingleMarks: 4.00Negative: -1.00

Oppositely oriented identical magnets A,B and nonmagnetic bar C fall through a copper loop. Compare fall times.

A. tA>tB>tCB. tA=tB>tCC. tA=tB<tCD. tA<tB<tC

Q3SingleMarks: 4.00Negative: -1.00

For the displayed cycle C→A (isochoric), A→B (isothermal) and B→C (isobaric), find net work.

A. RT ln((VB-VC)/VC)B. (P1-P2)VC+P2(VB-VC)C. RT ln(VB/VC)-P2(VB-VC)D. 0

Q4SingleMarks: 4.00Negative: -1.00

The dimension of 1/RC is the same as:

A. CurrentB. ChargeC. FrequencyD. Time

Q5SingleMarks: 4.00Negative: -1.00

For y=3cos(πx-4πt) cm, which statement is wrong?

A. vmax=12π cm/s and wavelength=0.2 mB. Wave speed in +x is 4π cm/sC. At t=0,x=0.25 cm transverse speed is 6√2π cm/sD. Maximum transverse acceleration is 48π² cm/s²

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