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AIIMS (All India Institute of Medical Sciences) Physics: Questions 81 - 85 of 500
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Question 81
Appeared in Year: 2005
Question MCQ▾
What should be the maximum acceptance angle at the air-core interface of an optical fiber if n1 and n2 are the refractive indices of the core and the cladding, respectively – [AIIMS]
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 82
Appeared in Year: 2000
Question MCQ▾
A body is projected at such an angle that the horizontal range is three times the greatest height. The angle of projection is [DPMT]
Choices
Choice (4) | Response | |
---|---|---|
a. | 25° | |
b. | 42° | |
c. | 33° | |
d. | 53° |
Question 83
Appeared in Year: 2005
Question MCQ▾
The dimensional formula of angular velocity is [JIPMER 1993; AFMC 1996]
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 84
Appeared in Year: 1995
Question MCQ▾
Force between two identical bar magnets whose centers are r meter apart is 4.8 N when their axes are in same line. If separation is increased to 2r, the force between them is reduced to: [AIIMS]
Choices
Choice (4) | Response | |
---|---|---|
a. | 2.4 N | |
b. | 0.3 N | |
c. | 1.2 N | |
d. | 0.6 N |
Question 85
Question MCQ▾
What happens, when we multiply a vector by (- 2) ?
Choices
Choice (4) | Response | |
---|---|---|
a. | Direction remains unchanged and unit changes | |
b. | Direction reverses and unit changes | |
c. | Direction reverses and magnitude is doubled | |
d. | Question does not provide sufficient data or is vague |