12. Light and sound

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12. Light and sound Fill in the blanks.  1. Objects which cannot give out their own light are called Non - luminous.  2. Trandparent   object allow light to pass through them completely.  3. Reflection   is bouncing back of light from a smooth shiny surface.  Write true or false.  1. Sound does not require any medium to travel. (F)   2.The sound of loudspeaker is an unpleasant sound. (T)  3.sound travels through air in the form of particles. (F)  Let us practise 1. Fill in the blanks.  a. Noise is produced by irregular    sound waves.  b. Sun is the main source of heat and light on earth.  c. When light hits a surface and cannot pass through it, the surface is called opaque.  d. Sound is produced due to vibration of objects.  2 . Write 'T' for true and 'F' for false.  a. Honking car is an example of a pleasant sound. (F)  b. Light cannot bend around the cornera. (T)   c. Wat...
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tennis

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10 General Knowledge questions and solutions about Tennis:

1. Who is extensively considered as the best tennis participant of all time?

Answer: Novak Djokovic.

2. Which match is regarded the oldest and most prestigious in tennis?

Answer: Wimbledon.

3. Who received the first Wimbledon championship in 1877?

Answer: Spencer Gore.

4. What is the quickest recorded serve in tennis history?

Answer: Samuel Groth (263 km/h).

5. Who holds the file for most Grand Slam titles won?

Answer: Margaret Court (24).

6. What is the identify of the well-known tennis match held in Paris?

Answer: French Open.

7. Who is the solely participant to acquire a "Golden Slam"?

Answer: Steffi Graf.

8. Who received the most ATP Masters one thousand titles?

Answer: Novak Djokovic.

9. What is the title of the tennis event held in New York?

Answer: US Open.

10. Who is the first Indian to win a Grand Slam title?

Answer: Leander Paes.







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