Discussion
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- Question
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
- Correct Answer
- 36
- 1. Choose the most appropriate answer:In which atmospheric layer are the communication satellites located?
Options- A. Stratosphere
- B. Ionosphere
- C. Troposphere
- D. Mesosphere Discuss
- 2. 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
- 3. Temperature of distant luminous bodies can be determined by
Options- A. Mercury thermometers
- B. Gas thermometers
- C. Pyrometers
- D. Colour thermometers Discuss
- 4. Propagation of sound can be visualised as propagation of ____________ variations in the medium
Options- A. elasticity
- B. viscosity
- C. density
- D. porosity Discuss
- 5. 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
- 6. 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
- 7. Which one among the following components is used as an amplifying device?
Options- A. Transformer
- B. Diode
- C. Capacitor
- D. Transistor Discuss
- 8. The unit of measurement of noise is
Options- A. Decibel
- B. Hertz
- C. Amplifier
- D. Acoustics Discuss
- 9. The complete form of 'IC' in electronics is
Options- A. Internal circuit
- B. Independent circuit
- C. Integrated circuit
- D. Inbuilt circuit Discuss
- 10. Anemometer is an instrument meant for measuring __________
Options- A. velocity
- B. air masses
- C. wind speed
- D. temperature Discuss
Physics problems
Search Results
Correct Answer: Ionosphere
Explanation:
The communication satellites are located in Ionosphere.
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: Pyrometers
Correct Answer: density
Correct Answer: 0.008
Correct Answer: becomes 1/4 th
Correct Answer: Transistor
Correct Answer: Decibel
Correct Answer: Integrated circuit
Correct Answer: wind speed
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