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## Physics Quiz for Competitive Exams

Q1.What is the speed of sound in carbon dioxide?
कार्बन डाइऑक्साइड में ध्वनि की गति कितनी है?
a. 216 m/s
b. 314 m/s
c. 426 m/s
d. 117 m/s

Q2.What is the frequency range of audible waves?
श्रव्य तरंगों की आवृत्ति रेंज क्या है?
a. 20 hertz to 20500 Hertz
b. 20 hertz to 30000 Hertz
c. 20 hertz to 25000 Hertz
d. 20 hertz to 20000 Hertz

Q3.Who discovered long radio waves?
लंबी रेडियो तरंगों की खोज किसने की?
a. John Bardeen
b. Marconi
c. J.J. Thomson
d. Enciro Fermi

Q4.Relative density is measured by?
सापेक्ष घनत्व किसके द्वारा मापा जाता है?
a. Parameter
b. Ferometer
c. Hydrometer
d. None of the above

Q5.Who invented Dynamite?
डायनामाइट का आविष्कार किसने किया था?
a. Enciro Fermi
b. John Bardeen
c. J.J. Thomson
d. Alfred Nobel

Q6.What is the escape velocity for the earth?
पृथ्वी के लिए पलायन वेग क्या है?
a. 20 km/s
b. 10.9 km/s
c. 112 km/s
d. 11.2 km/s

Q7.What is the charge of the Alpha particle?
अल्फा कण का आवेश क्या है?
a. +.2e
b. -2e
c. +2e
d. -.2e

Q8.Aluminium is the example of _________ magnetic substance?
एल्युमिनियम _________ चुंबकीय पदार्थ का उदाहरण है?
a. Hydromagnetic substance
b. Feromagnetic substance
c. Paramagnetic substance
d. None of the above

Q9.what is the position of the image when the object is placed between the and 2f in the convex lens?
उत्तल लेंस में वस्तु को 2f के बीच रखने पर छवि की स्थिति क्या होती है?
a. 2f
b. Beyond 2f
c. Both a & b
d. None of the above

Q10.What is the speed of light in water?
पानी में प्रकाश की गति कितनी है?
a.  2.25 × 108 m/s
b.  2.5 × 108 m/s
c. 4.5 × 108 m/s
d. 3.5 × 108 m/s

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