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How does an ear trumpet help to hear clearly? Note: (Conditions) 1) Like Our Page on Facebook 2) Share this Question on Facebook (Winner will be provided Rs 50 NTC/NCELL recharge card)
Study the diagram and answer the following questions 1. Which stage of life cycle of silkmoth is shown? 2. Label all the parts 3. Write its two characteristics
A progressive wave has frequency of 40 Hz and velocity 50 m/s. Find the phase difference between two points on the wave at a separation of 40 cm.