1
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statement is true regarding the centre of mass of a system?

A
The centre of mass depends on the size and shape but does not depend on the distribution of mass of the body.
B
The centre of mass depends on the coordinate system.
C
The centre of mass of a system depends on the size and shape of the body but independent of the co-ordinate system
D
The centre of mass of a body always lies inside the body.
2
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A ray of light travelling through a medium of refractive index $$\frac{5}{4}$$ is incident on a glass of refractive index $$\frac{3}{2}$$. Find the angle of refraction in the glass, if the angle of incidence at the given medium - glass interface is $$30^{\circ}$$.

A
$$\sin ^{-1}\left(\frac{1}{2}\right)$$
B
$$\sin ^{-1}\left(\frac{1}{3}\right)$$
C
$$\sin ^{-1}\left(\frac{5}{12}\right)$$
D
$$\sin ^{-1}\left(\frac{6}{5}\right)$$
3
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the radii of the nucleus of two element $$\mathrm{X}$$ and $$\mathrm{Y}$$ having the mass numbers 232 and 29 is:

A
4 : 1
B
1 : 4
C
1 : 2
D
2 : 1
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

When light wave passes from a medium of refractive index '$$\mu$$' to another medium of refractive index '$$2 \mu$$' the phase change occurs to the light is :

A
180$$^\circ$$
B
90$$^\circ$$
C
60$$^\circ$$
D
zero
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