MCQOPTIONS
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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 2001. |
A wire under tension vibrates with a frequency of 450 cycles per sound. What would be the fundamental frequency if the wire were half as long, twice as thick and under one fourth tension ? |
| A. | 225 cps |
| B. | 190 cps |
| C. | 247 cps |
| D. | 174 cps |
| Answer» B. 190 cps | |
| 2002. |
With the increase in temperature, the frequency of the sound from an organ pipe? |
| A. | Decreases |
| B. | Increases |
| C. | Remain unchanged |
| D. | Changes erratically |
| Answer» C. Remain unchanged | |
| 2003. |
Energy is not carried by ? |
| A. | Longitudinal progressive waves |
| B. | Electromagnetic waves |
| C. | Transverse progressive waves |
| D. | Stationary wave |
| Answer» E. | |
| 2004. |
A tuning fork of frequency 480 Hz is in unison with pipe closed at one end vibrating in its first overtone. Then fundamental frequency of the pipe is ? |
| A. | 150 Hz |
| B. | 160 Hz |
| C. | 480 Hz |
| D. | 190 Hz |
| Answer» D. 190 Hz | |
| 2005. |
The radius, density and tension of a string A are twice the radius, density and tension of another string B. If the lengths of the string are equal, the ratio of their frequencies of their vibration (i.e. nA/nB) is? |
| A. | 1 |
| B. | 2 |
| C. | 1/2 |
| D. | 1/4 |
| Answer» D. 1/4 | |
| 2006. |
A pipe closed at one end vibrating in 5th overtone is in unison with open pipe vibrating in its 5th overtone. The ratio of lc : lo is? |
| A. | 12 : 11 |
| B. | 1 : 1 |
| C. | 11 : 12 |
| D. | 5 : 1 |
| Answer» D. 5 : 1 | |
| 2007. |
A tunning fork C is sound with another fork D of frequency 384 Hz gives 4 beats/sec. When C is filed, the beat frequency become 3 beates/sec, then original frequency of tunning fork K is ? |
| A. | 388 Hz |
| B. | 380 Hz |
| C. | 387 Hz |
| D. | 381 Hz |
| Answer» C. 387 Hz | |
| 2008. |
Two wires of same material and radii r and 2r respectively are welded together end to end. The combination is used as a sonometer wire and kept under tension T. The welded point is mid-way between the two bridges. When stationary waves are set up in the composite wire, the joint is a node. Then the ratio of the number of loops formed in the thinner to thicker wire is? |
| A. | 2 : 3 |
| B. | 1 : 2 |
| C. | 2 : 1 |
| D. | 5 : 4 |
| Answer» C. 2 : 1 | |
| 2009. |
There are three sources of sound of equal intensity with frequencies 400, and 401 and 402 vibrations/sec.The number of beats heard per second is ? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 2010. |
If two tuning forks A and B are sounded together, they produce 4 beats per second. A is then slightly loaded with wax, they produce two beats when sounded again. The frequency of A is 256 Hz. The frequency of B will be ? |
| A. | 250 Hz |
| B. | 252 Hz |
| C. | 260 Hz |
| D. | 262 Hz |
| Answer» C. 260 Hz | |
| 2011. |
Which one of he following represents progressive wave? |
| A. | y = A sin kx |
| B. | y = A sit t |
| C. | y = A cos (at - bx + c) |
| D. | none of these |
| Answer» E. | |
| 2012. |
The velocity of sound in air is not affected by change in ? |
| A. | Moisture content of air |
| B. | Temperature of air |
| C. | Atmospheric pressure |
| D. | Composition of air |
| Answer» D. Composition of air | |
| 2013. |
Doppler effect is applicable for? |
| A. | Sound wave |
| B. | Light waves |
| C. | None of above |
| D. | Both ‘a’ and ‘b’ |
| Answer» E. | |
| 2014. |
An astronaut can’t hear his companion at the surface of the moon because ? |
| A. | Produced frequencies are above the radio frequencies |
| B. | There is no medium for sound propagation |
| C. | Temperature is too low during night and too high during day moon |
| D. | None of above |
| Answer» C. Temperature is too low during night and too high during day moon | |
| 2015. |
A tuning fork when sounded together with a tuning fork of frequency 256 emits two beats. On loading the tuning fork of frequency 256 Hz, the number of beats heard are one per second.The frequency of tuning fork is ? |
| A. | 257 Hz |
| B. | 258 Hz |
| C. | 256 Hz |
| D. | 254 Hz |
| Answer» E. | |
| 2016. |
Sound travels 40 m during 20 vibrations .Its wavelength l is? |
| A. | 0.5 m |
| B. | 2 m |
| C. | 3 m |
| D. | 4 m |
| Answer» C. 3 m | |
| 2017. |
The velocity of sound in a gas at 30°C is approximately ? |
| A. | 332 m/s |
| B. | 350 m/s |
| C. | 530 m/s |
| D. | 332 km/s |
| Answer» C. 530 m/s | |
| 2018. |
A astronaut can’t hear the explosion on the surface of the moon because ? |
| A. | Frequency of explosion is out of audible range |
| B. | Temperature at that point is very low |
| C. | There is no medium on moon |
| D. | None of above |
| Answer» D. None of above | |
| 2019. |
Sound wave is an example of? |
| A. | Longitudinal wave |
| B. | Transverse wave |
| C. | Stationary wave |
| D. | All of these |
| Answer» B. Transverse wave | |
| 2020. |
Audible waves have a frequency of? |
| A. | 0 - 10,000 Hz |
| B. | 20 - 10,000 Hz |
| C. | 20 - 20 kHz |
| D. | 20 - 40 kHz |
| Answer» D. 20 - 40 kHz | |
| 2021. |
In 8% stock at 90 madhubala invested Rs. 32400. She sold out Rs. 18000 stock,the remaining stock at Rs. 98 and when the pricerose to Rs. 95, She invested the total sale proceeds in10% stock at 96(1/2). Find the change in income of Anu? |
| A. | Rs. 750 |
| B. | Rs. 760 |
| C. | Rs. 720 |
| D. | Rs. 740 |
| Answer» D. Rs. 740 | |
| 2022. |
A man invested Rs. 260000 in 5% stock at 104. He sold the stock when the price rose to Rs. 125 and invested the sale proceeds in 6% stock. By doing this his income increased by Rs. 2500. At what price did he purchase the second stock? |
| A. | Rs. 225 |
| B. | Rs. 125 |
| C. | Rs. 175 |
| D. | Rs. 150 |
| Answer» C. Rs. 175 | |
| 2023. |
A mand bought Rs. 20000 of 5% stock at 90 and sold it when its price rose to Rs. 93(3/)4. Find his gain percent? |
| A. | 5(1/6)% |
| B. | 5(5/6)% |
| C. | 4(1/6)% |
| D. | 4(5/6)% |
| Answer» D. 4(5/6)% | |
| 2024. |
Transverse waves can propagate ? |
| A. | In a gas but not in a metal |
| B. | In a metal but not in gas |
| C. | Neither in a gas nor in a metal |
| D. | Either in a gas or in a metal |
| Answer» C. Neither in a gas nor in a metal | |
| 2025. |
Find the annual dividend received by Nishita from 1200 preferred shares and 3000 common shares both of par value Rs. 50 each if the dividend paid on preferred shares is 10% and semi-annual dividend of 3(1/2) is declared on common shares? |
| A. | Rs. 18500 |
| B. | Rs. 14500 |
| C. | Rs. 16500 |
| D. | Rs. 14500 |
| Answer» D. Rs. 14500 | |
| 2026. |
Mr. Lal invested Rs. 92000 in 9(1/2)% Stock at 91 (Brokerage: Re. 1). Find the annual income of Mr. Lal from this investment? |
| A. | Rs. 9000 |
| B. | Rs. 10500 |
| C. | Rs. 9500 |
| D. | Rs. 8000 |
| Answer» D. Rs. 8000 | |
| 2027. |
The velocity of sound in vacuum is? |
| A. | Zero |
| B. | 27.5 m/s |
| C. | 156 m/s |
| D. | 330 m/s |
| Answer» B. 27.5 m/s | |
| 2028. |
Which of the following phenomenon cannot take place with sound wave? |
| A. | Reflection |
| B. | Interference |
| C. | Diffraction |
| D. | Polarization |
| Answer» E. | |
| 2029. |
A man invests Rs. 27600 in 4% stock at 92. He sold Rs. 20000 stock when the price rose to Rs. 96, and sold the remaining stock when the market value fell to Rs. 90. How much does he gain or loss in the transaction? |
| A. | Gain = Rs. 600 |
| B. | Loss = Rs. 600 |
| C. | Gain = Rs. 650 |
| D. | Loss = Rs. 650 |
| Answer» B. Loss = Rs. 600 | |
| 2030. |
A man buys Rs. 50 shares in a company which pays 10% dividend. If the man gets 12.5% on his investment, at what price did he buy the shares? |
| A. | Rs. 37.50 |
| B. | Rs. 48 |
| C. | Rs. 40 |
| D. | Rs. 52 |
| Answer» D. Rs. 52 | |
| 2031. |
Velocity of sound in air is ? |
| A. | 300 m/s |
| B. | 3.8 ´ 1010 m/s |
| C. | 3 ´ 108 m/s |
| D. | 9 ´ 1019 m/s |
| Answer» B. 3.8 ´ 1010 m/s | |
| 2032. |
Find the annual dividend received by Sunil for his 200 preferred shares and 1000 common shares, both of par value Rs. 100 each if the dividend declared on a preferred share is 10% per annum and an annual dividend of 12(1/2)% on the common shares? |
| A. | Rs. 4500 |
| B. | Rs. 4000 |
| C. | Rs. 550 |
| D. | Rs. 3500 |
| Answer» B. Rs. 4000 | |
| 2033. |
A company declared an annual dividend of 10%. Find the annual dividend received by Anu owing 400 shares of the company having a par value of Rs. 100 each? |
| A. | Rs. 45000 |
| B. | Rs. 50000 |
| C. | Rs. 40000 |
| D. | Rs. 60000 |
| Answer» D. Rs. 60000 | |
| 2034. |
If the pressure amplitude in a sound wave is tripled. Then by what factor the intensity of the sound wave is increased ? |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 2 |
| Answer» D. 2 | |
| 2035. |
Find the income on 7 1/2% stock of Rs. 20000 purchased at Rs. 120? |
| A. | Rs. 1550 |
| B. | Rs. 1500 |
| C. | Rs. 1450 |
| D. | Rs. 1600 |
| Answer» C. Rs. 1450 | |
| 2036. |
Find the investment required to purchase Rs. 125000 of 8% stock at 92? |
| A. | Rs. 115000 |
| B. | Rs. 105000 |
| C. | Rs. 120000 |
| D. | Rs. 125000 |
| Answer» B. Rs. 105000 | |
| 2037. |
Mac buys 200 shares of par value Rs. 10 each, of a company, which pays an annual dividend of 8% at such a price that he gets 10% on his investment. Find the market value of share? |
| A. | Rs. 8 |
| B. | Rs. 6 |
| C. | Rs. 10 |
| D. | Rs. 12 |
| Answer» B. Rs. 6 | |
| 2038. |
Ram invested Rs. 88008 in 9 1/2% Stock at 112 (Brokerage: Rs. 2) Find annual income of Ram from this investment? |
| A. | Rs. 6334 |
| B. | Rs. 7334 |
| C. | Rs. 6874 |
| D. | Rs. 6534 |
| Answer» C. Rs. 6874 | |
| 2039. |
A man bought 20 shares of Rs. 50, the rate of dividend being 131/2%. The rate of interest obtained at 5 discount is? |
| A. | 12% |
| B. | 15% |
| C. | 13% |
| D. | 16% |
| Answer» C. 13% | |
| 2040. |
A person invest Rs. 28500 in 5% stock at 95. He sold Rs. 15000 stock when the price rose to Rs. 98 and sold the remaining stock when the market value of the stock fell to Rs. 90.How much does he gain or loss in the transaction? |
| A. | Gain = Rs. 300 |
| B. | Gain = Rs. 400 |
| C. | Loss = Rs. 300 |
| D. | Loss = Rs. 400 |
| Answer» D. Loss = Rs. 400 | |
| 2041. |
A tuning fork of frequency 480 Hz produces 10 beats per second when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in tension produces fewer beats per seconds then before? |
| A. | 460 Hz |
| B. | 470 Hz |
| C. | 480 Hz |
| D. | 490 Hz |
| Answer» C. 480 Hz | |
| 2042. |
A medicine company issued 125000 shares of par value Rs. 20 each. If the total dividend declared by the company is Rs. 375000, find the rate of divided paid by the company? |
| A. | 15% |
| B. | 10% |
| C. | 13% |
| D. | 14% |
| Answer» B. 10% | |
| 2043. |
The shares of a company of par value Rs. 10 each, are availale at 20% premium. Find the amount paid by the buyer who wants to buy 2500 shares. What would be the gain of the buyer if he sells those shares at the rate of Rs. 20 per share? |
| A. | Rs. 25000 |
| B. | Rs. 20000 |
| C. | Rs. 30000 |
| D. | Rs. 22000 |
| Answer» C. Rs. 30000 | |
| 2044. |
A 9% stock yields 8%. The market value of the stock is? |
| A. | Rs. 72 |
| B. | Rs. 112.50 |
| C. | Rs. 92 |
| D. | Rs. 116.50 |
| Answer» C. Rs. 92 | |
| 2045. |
The velocity of sound in air at 4 atmosphere and that at 1 atmosphere pressure would be ? |
| A. | 1 : 1 |
| B. | 4 : 1 |
| C. | 1 : 4 |
| D. | 3 : 1 |
| Answer» B. 4 : 1 | |
| 2046. |
Which is better investment, 12% stock at par with an income tax at the rate of 5 paise per rupee or 14t(2/7)% stock at 120 free from income ? |
| A. | 12% stock |
| B. | Both are equally good |
| C. | 14t(2/7)t% stock |
| D. | Cannot be compared |
| Answer» D. Cannot be compared | |
| 2047. |
The amplitude of two waves are in the ratio 5:2. If all other conditions for the two waves are same, then what is the ratio of their energy densities? |
| A. | 5 : 2 |
| B. | 10 : 4 |
| C. | 2.5 : 4 |
| D. | 25 :4 |
| Answer» E. | |
| 2048. |
Sushma invested Rs. 245000 in 7% stock at 98 and sold the stock when its price rose to Rs. 100. She invested the sale proceeds in 9% stock at 125. Find the change in income of Sushma? |
| A. | Rs. 600 |
| B. | Rs. 500 |
| C. | Rs. 400 |
| D. | Rs. 650 |
| Answer» C. Rs. 400 | |
| 2049. |
If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be ? |
| A. | Increasing by a factor of 2 |
| B. | Decreasing by a factor of 2 |
| C. | Decreasing by a factor of 4 |
| D. | Unchanged |
| Answer» D. Unchanged | |
| 2050. |
Find the income obtained by investing Rs. 90000 in 15/2% stock at( 112)1/2. |
| A. | Rs. 6000 |
| B. | Rs. 7500 |
| C. | Rs. 6500 |
| D. | Rs. 7000 |
| Answer» B. Rs. 7500 | |