1. Hydrogen bomb is based on:
Cation
3. When a green leaf is seen in red light its co lour will be:
Black
4. Most of the light inside a tube light is in the form of
Ultraviolet light
5. Energy is measured in the same unit as:
6. Which of the following are most penetrating?
Beta Rays
7. Most of the light inside a tube light is in the form of
Ultraviolet light
8. A bubble of water shines because of
Total internal reflection
9. The co lour of light is determined by its
Wavelength
10. The speed of light will be minimum while passing through
Glass
11. Co lour in thin soap film seen during day time is due to
Interference of light
12. The pressure of the atmosphere is_________mm of mercury at the sea level.
760
13. If a magnet is heated, its magnetism will
Be lost
14. Of the following thing things, which one works with air pressure?
All
Become slow
16. What drives a nail into wood when stuck by hammer?
Impulse
17. Periscope is used in the:
Submarines
18. The number of oscillations per second is called
Frequency
19. Who propounded the Uncertainty Principle’ in Physics?
Water expands on freezing
20. What makes a liquid drop spherical?
Surface tension
21. Which among the following electromagnetic radiations has the highest wavelength?
Radio waves
22. Who discoverer that water exerts equal pressure in all directions?
Blaise Pascal
23. Who discovered that an electric current has a magnetic field?
Hans Christian Ousted
24. Cooking gas contains more than 90%
Methane
25. The content of the LPG cylinder is in the form of
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