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Physics
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Question 1 of 10
1. Question
Vision problem occurring in old age is known as:
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Incorrect
Correct Answer: Presbyopia
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Question 2 of 10
2. Question
The focal length of each half, if the symmetrical lens of focal length f is cut along AB:
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Incorrect
Correct Answer:2f
Explanation: -
Question 3 of 10
3. Question
Two bodies of unequal masses posses the same momentum. The K.E. of the heavier mass will be …… the K.E. of the lighter mass
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Incorrect
Correct Answer: greater than
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Question 4 of 10
4. Question
Electron was discovered by:
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Incorrect
Correct Answer: J.J. Thomson
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Question 5 of 10
5. Question
Which of the following is not a star?
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Incorrect
Correct Answer: Moon
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Question 6 of 10
6. Question
The focal length of a spherical mirror is 20cm. The radius of curvature of this mirror will be:
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Incorrect
Correct Answer: 40 cm
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Question 7 of 10
7. Question
If ⅄r and ⅄v are wavelengths of light rays of red and violet colours respectively then:
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Incorrect
Correct Answer:
⅄r > ⅄v
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Question 8 of 10
8. Question
To correct the defect Myopia or near sightedness, we have to use:
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Incorrect
Correct Answer: concave lens
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Question 9 of 10
9. Question
Which of the following colours is not a primary colour?
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Incorrect
Correct Answer: White
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Question 10 of 10
10. Question
The image of an object in human eye is formed at:
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Incorrect
Correct Answer: Retina