Discussion
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- Question
Which of the following physical quantities do not have same dimensions
Options- A. Force and Pressure
- B. Work and Energy
- C. Impulse and momentum
- D. Weight and Force
- Correct Answer
- Force and Pressure
- 1. The information of brilliant colors in a thin soap film is a consequence of the phenomena of
Options- A. Polarization and interference
- B. Diffraction and dispersion
- C. Multiple refraction and dispersion
- D. Multiple reflection and interference Discuss
- 2. What is the full form of "RADAR" ?
Options- A. Radio Detecting and Ranging
- B. Region Device and Ranging
- C. Radio Detect and Rangs
- D. Radio Device and Ranging Discuss
- 3. If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to _____ ?
Options- A. 300 m
- B. 30 m
- C. 3 m
- D. 0.3 m Discuss
- 4. The working of the quartz crystal in the watch is based on the
Options- A. Piezo - electric Effect
- B. Edison Effect
- C. Photoelectric Effect
- D. Johnson Effect Discuss
- 5. Total internal reflection can take place when light travels from
Options- A. Air to glass
- B. Air to water
- C. Water to glass
- D. Diamond to glass Discuss
- 6. Ball bearings are used in cycles, scooters etc to
Options- A. Increase the friction between the wheel and the axle
- B. Reduce the friction between the wheel and the axle
- C. Reduce the friction between ground and the whee
- D. None of the above Discuss
- 7. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
Options- A. the ringing is not loud enough
- B. the glass of the bell jar absorbs the sound waves
- C. the bell jar is too small
- D. there is no air or any other gas in the bell jar Discuss
- 8. If lift is going up with acceleration, the apparent weight of a body is
Options- A. may be more or less than true weight
- B. more than the true weight
- C. less than the true weight
- D. equal to the true weight Discuss
- 9. A man jumping out of a moving train is thrown
Options- A. forward
- B. backward
- C. sidewaqys
- D. None of these Discuss
- 10. The direction of heat flow between two objects depends on
Options- A. Their masses
- B. Their heat contents
- C. Their temperatures
- D. Whether they are in solid, liquid or gaseous state Discuss
Physics problems
Search Results
Correct Answer: Multiple reflection and interference
Correct Answer: Radio Detecting and Ranging
Correct Answer: 300 m
Correct Answer: Piezo - electric Effect
Correct Answer: Diamond to glass
Correct Answer: Reduce the friction between the wheel and the axle
Correct Answer: there is no air or any other gas in the bell jar
Explanation:
As there is no medium inside the bell jar, sound cannot travel
Correct Answer: more than the true weight
Correct Answer: forward
Explanation:
At the time of jumping out he has the same velocity as the moving train
Correct Answer: Their temperatures
Explanation:
Heat always flows from a body at higher temperature to a body at a lower temperature.
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