GRADE: XI DATE:1st December 2017, Friday
COMMON QUESTIONS
1. Why does the sun look little oval when it is at the horizon?
2. Why do star twinkle?
3. A lens made of glass is immersed into water. Will its power increase or decrease?
4. What is centripetal force? Obtain an expression for it.
5. What is acceleration due to gravity? Explain the variation of g due to height and depth.
6. Find the refractive index of a prism in terms of minimum deviation and angle of prism.
7. If the force of gravity acts on all bodies in proportion to their masses, why does not a heavy body fall faster than a light body?
8. Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?
9. What are the conditions for minimum deviation of a prism?
SET 1
1. What is centripetal force? Obtain an expression for it.
2. What is acceleration due to gravity? Explain the variation of g due to height and depth.
3. Find the refractive index of a prism in terms of minimum deviation and angle of prism.
4. If the force of gravity acts on all bodies in proportion to their masses, why does not a heavy body fall faster than a light body?
5. Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?
6. What are the conditions for minimum deviation of a prism?
SET 2
1. At what condition a body becomes weightless at the equator?
2. Why an astronaut in a space capsule orbiting the earth feels weightlessness?
3. Why are roads banked on curved path?
4. What is centripetal force? Obtain an expression for it.
5. What is acceleration due to gravity? Explain the variation of g due to height and depth.
6. Find the refractive index of a prism in terms of minimum deviation and angle of prism.
7. If the force of gravity acts on all bodies in proportion to their masses, why does not a heavy body fall faster than a light body?
8. Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?
9. What are the conditions for minimum deviation of a prism?
SET 3
1. What is angular velocity?
2. What is circular motion?
3. What do you mean by ideal gas? How does it differ from the real gas?
4. What is centripetal force? Obtain an expression for it.
5. What is acceleration due to gravity? Explain the variation of g due to height and depth.
6. Find the refractive index of a prism in terms of minimum deviation and angle of prism.
7. If the force of gravity acts on all bodies in proportion to their masses, why does not a heavy body fall faster than a light body?
8. Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?
9. What are the conditions for minimum deviation of a prism?
SET 4
1. Do you expect the gas in cooking cylinder to obey the ideal gas equation?
2. Why does a cycle tube burst in summer? Why it becomes cool just after burst?
3. Define critical angle and total internal reflection.
4. What is centripetal force? Obtain an expression for it.
5. What is acceleration due to gravity? Explain the variation of g due to height and depth.
6. Find the refractive index of a prism in terms of minimum deviation and angle of prism.
7. If the force of gravity acts on all bodies in proportion to their masses, why does not a heavy body fall faster than a light body?
8. Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?
9. What are the conditions for minimum deviation of a prism?
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