Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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According to quantum theory of light, photons of light are emitte in the
forms of _________
a. | Waves | b. | Magnetic waves | c. | Packets of energy
| d. | None |
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2.
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Convace mirror are used as __________ in telescope.
a. | Convex | b. | Concave | c. | Dahanay
| d. | None |
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3.
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Light is a form of ________
a. | Mass | b. | Heat | c. | Temperatue
| d. | Energy |
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4.
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In concave mirrors, if a bady is placed between focus “F” and
pole”2p” then its image will be on __________________ side of mirror
a. | Virtule | b. | Real | c. | Back | d. | Infront |
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5.
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At 4 the density of water is _________
a. | Lesser | b. | Equal | c. | Greater
| d. | No change |
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6.
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Heat is a form of _________ which flows from a hot body to cold body.
a. | Gas | b. | Energy | c. | Matter
| d. | Oil |
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7.
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On heating a body, the increase of a body is called ____________
a. | Longitudinal strain | b. | Stress | c. | Strain | d. | Longitudinal Stress
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8.
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The travel sound from one place to another place __________ is used.
a. | Dielectric | b. | Medium | c. | Air
| d. | Wax |
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9.
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An interesting example of resonance is ___________
a. | Stone | b. | Harmonium | c. | Guitar
| d. | Swing |
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10.
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______________ is also a peridic motion.
a. | Longitudinal | b. | Wave motion | c. | To & fro
motion | d. | SHM |
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11.
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____________ is an instrumnet which makes work very easy.
a. | Machine | b. | Radio | c. | Liver
| d. | None |
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12.
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The ratio of weight and force is called __________
a. | Mechanical advantage | b. | Physical Advantage | c. | Chemicla
Advantage | d. | None of above |
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13.
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If we distrub a body which is in stable state then its ___________ cecomes
higher.
a. | Below | b. | Center of gravity | c. | Above
| d. | None |
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14.
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The energy of body due to its motion is called __________ energy.
a. | Potential | b. | Chemical | c. | Light
| d. | Kinetic |
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15.
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SHM have _________ characteristic.
a. | Loudness | b. | Pitch | c. | Qaulity | d. | All above
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16.
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The energy of body due to its motion is called __________ energy.
a. | Potential | b. | Chemical | c. | Light
| d. | Kinetic |
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17.
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______________ is an example of simple machine.
a. | Sewing machine | b. | Petrol engine | c. | Bicycle
| d. | Pulley |
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18.
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The waves produced in air due to vibrating body are called ________ waves.
a. | Longitudinal | b. | Transverse | c. | Magentic
| d. | Electrostatic |
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19.
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The velocity of sound at normal temprature pressure is _________ m/sec
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20.
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G is called __________
a. | Gravitational attraction | b. | Gravitational acceleration
| c. | Gravitational Force | d. | Gravitational constant
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21.
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______________ is a vector quantity.
a. | Mass | b. | Torque | c. | Distance
| d. | Time |
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22.
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The velocity of sound is ______________ then the velocity of light.
a. | Less | b. | Greater | c. | Equal
| d. | None |
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23.
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If we reduce the frequency of vibrating body then the pitch of sound produced
will becomes ________
a. | Less | b. | Greatre | c. | Equal
| d. | None |
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24.
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In longitudinal waves the distance between two trough is called ____________.
a. | Displacement | b. | Wave length | c. | Velocity
| d. | Speed |
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25.
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The waves in which the direction of the vibrational motion of the particle of
medium is prependule to direction of motion of wavesae callec __________ waves.
a. | Longitudinal | b. | Transverse | c. | Periodic
| d. | None |
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26.
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The longitudinal waves consits of ___________
a. | Crest | b. | Trough | c. | Crest &
Trough | d. | None |
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