NSO Level 1- Science Olympiad (SOF) Class 10: Questions 51 - 56 of 1497
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Question 51
Question MCQ▾
If power of a lens is , then radius of the curvature of the lens is:
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 52
Question MCQ▾
By which of the following mirror we can get long and thin image?
Choices
Choice (4) | Response | |
---|---|---|
a. | Cylindrical mirror | |
b. | Concave mirror | |
c. | Parabolic mirror | |
d. | Convex mirror |
Question 53
Question MCQ▾
If an object is placed between focal point and centre of curvature of converging lens, then characteristics of its image will be:
Choices
Choice (4) | Response | |
---|---|---|
a. | Real, inverting, diminished | |
b. | Virtual, upright, diminished | |
c. | Virtual, upright, enlarged | |
d. | Real, inverting, enlarged |
Question 54
Question MCQ▾
In an optical instrument, if we replaced lens having focal length of the lens becomes times than original lens, then its power of the instrument is charged by factor:
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | 3 | |
c. | 6 | |
d. |
Question 55
Question MCQ▾
A converging lens has a focal length of . If an object is placed from the centre of lens, then image is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Real, Erect, Enlarged | |
b. | Real, Inverted, Diminished | |
c. | Real, Erect, Same height | |
d. | Virtual, Inverted, Same height |
Question 56
Question MCQ▾
Which of the following mirror is used for focusing light?
Choices
Choice (4) | Response | |
---|---|---|
a. | Concave | |
b. | Convex | |
c. | Plane mirror | |
d. | Plane-convex mirror |