Leaderboard: PHY 102 CBT
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PHY 102 CBT
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PHY 102 CBT
1-20 QUESTIONS
“RIGHT OR WRONG ANSWER WILL BE DISPLAYED AT THE END OF THE QUIZ”
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Question 1 of 26
1. Question
Physical propertise shared by both radio waves and sound waves are:
i. both can be polarized. ii. both can be reflected iii. both can be both can be diffracted.Get Complete Materials & PQ here
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Question 2 of 26
2. Question
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Question 3 of 26
3. Question
The pitch of a train whistle is lower when the train is approaching the listener than when it is moving away because:
Get Complete Materials & PQ herethe velocity of sound in air is independent of the motion of the source
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Question 4 of 26
4. Question
Which one of the following phenomenon cannot be explained by the wave theory of light?
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Question 5 of 26
5. Question
Which of the following statements about sound waves is not correct?
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Question 6 of 26
6. Question
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Question 7 of 26
7. Question
When light enters glass from air:
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Question 8 of 26
8. Question
A wave whose frequency is 0.4Hz travels 54m in 9seconds. The distance between adjacent crests is
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Question 9 of 26
9. Question
A hunter at 408m from a cliff fires a gun and hears an echo 2.4 seconds after, what is the speed of sound?
Get Complete Materials & PQ here380m/s
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Question 10 of 26
10. Question
The image of a pin formed by a diverging lens of focal length 10cm is 5cm from the lens. Calculate the distance of the pin from the lens.
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Question 11 of 26
11. Question
An object is placed at O between the focal point F and the pole P of a diverging lens. if F’ is the focal point on the other side of the lens then, the image is formed:
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Question 12 of 26
12. Question
An object is placed infront of a converging lens of focal length 10cm and the image is real and twice the size of the object. How far is the object from the lens?
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Question 13 of 26
13. Question
The eye defect in which the rays from infinity to the eye converge before the retina can be corrected by a
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Question 14 of 26
14. Question
Which of the following is used for controlling the amount of light entering the eye
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Question 15 of 26
15. Question
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Question 16 of 26
16. Question
Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell ?
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Question 17 of 26
17. Question
Calculate the length of a constantan wire of cross sectional area 4π × 10-8 m2 and resistivity 1.1 x 10-6Ωm required to construct a standard resistor of resistance 21Ω (take π = 22/7)
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Question 18 of 26
18. Question
A lamp bulb is rated 60W for a 240V supply, what is the resistance of the lamp?
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Question 19 of 26
19. Question
In domestic circuits electrical appliances and lamps are arranged in parallel across the mains so as to enable the
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Question 20 of 26
20. Question
Who stated the law that the direction of the induced emf is always such as to oppose the change producing it.
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Question 21 of 26
21. Question
Repulsive forces are NOT experienced in
i. Magnetic field ii. Gravitational field iii electric field
Which of the statements above is/are correct?Get Complete Materials & PQ here
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Question 22 of 26
22. Question
Lines of force of a charged body are
i. Imaginary lines ii. The region around the body iii. Represented by concentric circles
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Question 23 of 26
23. Question
A resistor is connected in series with two cells each of e.m.f. 1.5V and internal resistance of 0.5Ω. What is its resistance if a current of 0.6A passes through it?
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Question 24 of 26
24. Question
A bulb is marked 60W, 240V. Find the current passing through it when connected in series to a 240V supply
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Question 25 of 26
25. Question
Which of the following statements about magnets is correct?
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Question 26 of 26
26. Question
Young’s modulus has the same unit as
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