Model Questions for Scientific Assistant (IMD) Exam (Paper-2) PHYSICS - Set 25

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1. The study of heat.

a. Thermodynamics
b. Absolute zero
c. Internal energy
d. First law of thermodynamics

2. The upper atmosphere becomes warmer than regions below it.

a. Adiabatic process
b. Temperture inversion
c. Second law of thermodynamics
d. Heat engine

3. A process in which no heat leves or enters the system.

a. Thermodynamics
b. Absolute zero
c. Internal energy
d. Adiabatic process

4. Represents the amount of disorder in a system.

a. Thermodynamics
b. Absolute zero
c. Heat engine
d. Entropy

5. A machine that converts heat input into work output.

a. Thermodynamics
b. Absolute zero
c. Heat engine
d. Entropy

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6. All systems tend to become more disordered with time. The amount of usable energy decreases with time and continuing operation of the system.

a. Thermodynamics
b. Temperture inversion
c. Second law of thermodynamics
d. Heat engine

7. A longitudinal wave travels in a material and creates a local condensed region with higher pressure.

a. Infrasonic
b. Ultrasonic
c. Compression
d. Rarefaction

8. A sound whose frequency is too low for humans to hear.

a. Infrasonic
b. Ultrasonic
c. Compression
d. Rarefaction

9. A sound whose frequency is too high for humans to hear.

a. Infrasonic
b. Ultrasonic
c. Compression
d. Rarefaction

10. An oscillating force sets up vibrations in a material.

a. Infrasonic
b. Ultrasonic
c. Compression
d. Forced vibration

Answer

1. (a) 2. (b) 3. (d) 4. (d) 5. (c) 6. (c) 7. (c) 8. (a) 9. (b) 230. (d)

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Study Kit for SSC Scientific Assistant (IMD) EXAM