General Studies  Physics

21. In which of the following substance speed of sound is high

Kerosene Air Water Aluminium

Share QNo: 21

22. Which of the following is not a transverse waves

Light waves Sound waves Micro waves Rado waves

Share QNo: 22

23. Which effect of sound is used by Bats

Raman effect Doppler effect Tyndal effect Raleigh effect

Share QNo: 23

24. Which of the following magnet used in telephone

permanent magnet electromagnet bar magnet none

Share QNo: 24

25. Indentify the Principle of magnetic Train

Magnetic repulsive force Magnetic attractive force Repulsive force of charge Attractive force of charge

Share QNo: 25

26. The old name of magnet

Magnetite Magnet Iron Bauxite

Share QNo: 26

27. The intensity of sound causes damage to the ear

100 dB 120dB 90dB 75dB

Share QNo: 27

28. When temperature increases,speed of sound is

Decreases Not changed 0 Increases

Share QNo: 28

29. Which microscope is used by watch repairer

Compound microscope Simple microscope Telescope none

Share QNo: 29

30. Primary rainbow is due to

One time total internal reflection two times refraction Two time total internal reflection two times refraction Total internal reflection Refraction

Share QNo: 30


*Click on the QNo to display a Question.

Total Ans