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- Question
Temperature of distant luminous bodies can be determined by
Options- A. Mercury thermometers
- B. Gas thermometers
- C. Pyrometers
- D. Colour thermometers
- Correct Answer
- Pyrometers
- 1. Propagation of sound can be visualised as propagation of ____________ variations in the medium
Options- A. elasticity
- B. viscosity
- C. density
- D. porosity Discuss
- 2. Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s
Options- A. 2000
- B. 0.016
- C. 1000
- D. 0.008 Discuss
- 3. A tank filled partially with a liquid is subjected to a uniform horizontal acceleration. Which of the following is true for the surface of liquid in the tank?
Options- A. The liquid surface falls down on the direction of motion and rises up on the back side of the tank
- B. The liquid surface falls down only at the center of the tank
- C. The surface of the liquid remains horizontal
- D. None Discuss
- 4. Optical fiber works on the principle of -
Options- A. Diffusion
- B. Total Internal Reflection
- C. Scattering
- D. Refraction Discuss
- 5. 1kWH = .........J
Options- A. 3.6×10^-8
- B. 3.6×10^-6
- C. 3.6×10^8
- D. 3.6×10^6 Discuss
- 6. Choose the most appropriate answer:Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation?
Options- A. Scattering
- B. Diffraction
- C. Interference
- D. Polarization Discuss
- 7. Choose the most appropriate answer:In which atmospheric layer are the communication satellites located?
Options- A. Stratosphere
- B. Ionosphere
- C. Troposphere
- D. Mesosphere Discuss
- 8. A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4seconds.
Options- A. 4
- B. 72
- C. 36
- D. 8 Discuss
- 9. If the velocity of a body is halved its kinetic energy ________________.
Options- A. become 4 times
- B. becomes 1/4 th
- C. is also doubled
- D. becomes half Discuss
- 10. Which one among the following components is used as an amplifying device?
Options- A. Transformer
- B. Diode
- C. Capacitor
- D. Transistor Discuss
Physics problems
Search Results
Correct Answer: density
Correct Answer: 0.008
Correct Answer: The liquid surface falls down on the direction of motion and rises up on the back side of the tank
Correct Answer: Total Internal Reflection
Correct Answer: 3.6×10^6
Correct Answer: Scattering
Explanation:
The Nobel Prize in Physics 1930 was awarded to Sir Chandrasekhara Venkata Raman "for his work on the scattering of light and for the discovery of the effect named after him".
Correct Answer: Ionosphere
Explanation:
The communication satellites are located in Ionosphere.
Correct Answer: 36
Correct Answer: becomes 1/4 th
Correct Answer: Transistor
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