# Physics Quiz for Competitive Exams

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## Physics Quiz for Competitive Exams

Q1.Which instrument is used to measure the depth of the ocean?
समुद्र की गहराई मापने के लिए किस उपकरण का उपयोग किया जाता है?
a. Fathometer
b. Fluxmeter
c. Endoscope
d. Galvanometer

Q2.What will be a change in wavelength when a ray or light enters a glass slab from air?
जब किरण या प्रकाश हवा से एक ग्लास स्लैब में प्रवेश करता है तो तरंग दैर्ध्य में क्या परिवर्तन होगा?
a. Its wavelength increase
b. Its wavelength decrease
c. Its frequency increase
d. Both are increases

Q3. Planet follows which path, according to kepler’s first law?
कीलर के पहले नियम के अनुसार, ग्रह किस पथ का अनुसरण करता है?
a. Elliptical
b. Circle
c. Hyperbole
d. Irregular shape

Q4.A convex mirror is used in?
उत्तल दर्पण का उपयोग किसमें किया जाता है?
a. Torches
b. Shaving mirrors
d. Rear view mirrors in a vehicle

Q5.Why The twinkling of stars is observed?
तारों की टिमटिमाहट क्यों देखी जाती है?
a. Atmospheric Reflection
b. Atmospheric refraction
c. Atmospheric scattering of light
d. Atmospheric internal reflection

Q6.The least distance of distinct vision for a adult with normal eye site?
सामान्य नेत्र स्थल वाले वयस्क के लिए अलग दृष्टि की कम से कम दूरी?
a. 25m
b. 2.5cm
c. 25cm
d. 2.5m

Q7.Curie point is the temperature at which?
क्यूरी बिंदु किस तापमान पर होता है?
a. Matter becomes radioactive/पदार्थ रेडियोधर्मी हो जाता है
b. A metal loses its permanent magnetic properties/एक धातु अपने स्थायी चुंबकीय गुणों को खो देता है
c. A metal loses conductivity/एक धातु चालकता खो देता है
d. Transmutation of metal occurs/धातु का संचार होता है

Q8.Newton/kg is a unit of ?
न्यूटन / किग्रा की एक इकाई है?
a. Acceleration /त्वरण
b. Force/बल
c. Efficiency/दक्षता
d. Energy/ऊर्जा

Q9.The magnitude of a vector can never be?
एक वेक्टर का परिमाण कभी नहीं हो सकता है?
a. Zero
b. Unity
c. Negative
d. Positive

Q10.What is unit of length of light waves?
प्रकाश तरंगों की लंबाई की इकाई क्या है?
a. Barrel/बैरल
b. Angstromएंगस्ट्रॉम
c. Knot
d. Carat/कैरेट

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