Last Updated On [03-11-2023]
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is
(a)
10/7
(b)
10/3
(c)
7/5
(d)
4/3
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is
(a)
10/7
(b)
10/3
(c)
7/5
(d)
4/3
Question ID - 101026 :-
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is
(a)
10/7
(b)
10/3
(c)
7/5
(d)
4/3
|
A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is |
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|
(a) |
10/7 |
(b) |
10/3 |
(c) |
7/5 |
(d) |
4/3 |
Next Question :
A uniform disc rolls without slipping on a rough horizontal surface with uniform angular velocity. Point 
is the centre of disc and 
is a point on disc as shown in Figure. In each situation oc column I a statement is given and the corresponding results are given in Column II. Match the statements in Column I with the results in Column II
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Column-I |
Column- II |
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|
(A) |
The velocity of point |
(p) |
Changes in magnitude with time |
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|
(B) |
The acceleration of point |
(q) |
Always directed from that point (the point on disc given in column I) towards the centre of disc |
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|
(C) |
The tangential acceleration of point |
(r) |
Is always zero |
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|
(D) |
The acceleration of the point on the disc which is in constant with rough horizontal surface |
(s) |
Is non-zero and remains constant in magnitude |
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CODES : |
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A |
B |
C |
D |
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a) |
C |
a |
b,d |
a |
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b) |
a |
b,d |
a |
b,d |
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c) |
c |
a |
b |
d |
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d) |
d |
c |
a |
b |
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on the disc
on the disc
on the discView Topper Answer
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