1) The method of transfer energy is a. conduction b. radiation c. wave motion d. all of above
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2) In a vacuum, all electromagnetic waves have the same a. frequency b. speed c. wavelength d. amplitude
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3) In one second, a human eardrum can oscillate back and forth up to a. 30,000 times b. 10,000 times c. 25,000 times d. 20,000 times
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4) The bending of waves around the corners of slits is called a. Reflection b. Refraction c. Diffraction d. Deflection
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5) If gm = ge⁄6, the time period of a simple pendulum is 2s and ge = 10ms-2. The length of the pendulum on the moon will be a. 2 m b. 1 m c. 0.17 m d. 2.5 m
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6) The distance between 2 consecutive crests or troughs is called a. time period b. amplitude c. frequency d. wave length
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7) If a body moves back and forth or to and fro about a point, then it is said to be a. consistency b. consistency c. rotating d. displacing
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8) The kinetic energy of mass attached to spring at mean position is a. maximum b. minimum c. moderate d. may be max. or min.
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9) A body executing simple harmonic motion always vibrates about a a. nearest position b. variable position c. fixed position d. most far position
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10) The mass doesn't stop at the mean position due to a. Inertia b. Friction c. Torque d. Gravity
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