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Mdcat-past-papers - ETEA Quiz

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121. A boy raises 10Kg object to height 5m. Stored potential energy:



122. Angular displacement is measured in:



123. When angular speed of a body is doubled, the centripetal acceleration becomes:



124. The radial acceleration is also considered as:



125. Centripetal force =



126. In a rotating spaceship, to produce artificial gravity, what does the centripetal force do?



127. When the mass of a body moving along a circle becomes half and radius becomes double and v is constant, the centripetal force becomes:



128. Energy of SHM oscillator is partly kinetic and partly potential. Which is correct?



129. A string of 6.0 m has wave speed of 24 m/s. Resonant frequencies?



130. Time period of a pendulum is T. If mass becomes 3m, new time period is:



131. If velocity = v, time period = T, frequency = f, then:



132. Circular periodic waves can be generated:



133. The distance covered by a sound wave per unit time is:



134. Accelerating electromagnetic charges radiate electromagnetic waves which propagate at the:



135. The waves in which the particles of the medium vibrate about their mean position along the direction of propagation of the waves are called:



136. The number of waves passing through a certain point in unit time is called:



137. A wave is characterized by three physical parameters:



138. Which type of waves can be polarized?



139. For longitudinal waves:



140. A tuning fork having frequency 440 Hz produces sound waves which travel with a speed of 340 m/s. What is the separation between compression and adjacent rarefaction?