KVPY Stream-SA (Class 11) Physics: Questions 49 - 51 of 242

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Question number: 49

» Kinematics » Projectile Motion

Appeared in Year: 2012

MCQ▾

Question

A firecracker is thrown with velocity of 30 ms-1 in a direction which makes an angle of 750 with the vertical axis. At some point on its trajectory, the firecracker split into two identical pieces in such a way that one piece falls 27 m far from the shooting point. Assuming that all trajectories are contained in the same plane, how far will the other piece fall from the shooting point? (Take g = 10 ms-2 and neglect air resistance),

Choices

Choice (4) Response
a.

72 m or 99 m

b.

28 m or 72 m

c.

63 m or 117 m

d.

63 m or 144 m

Question number: 50

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 2012

MCQ▾

Question

A circular loop of wire is in the same plane as an infinitely long wire carrying a constant current i. Four possible motions of the loop are marked by N, E, W and S as shown:

A circular loop of wire and an infinitely long wire

A Circular Loop of Wire and an Infinitely Long Wire

Figure shows a circular loop of wire is in same plane as an infinitely long wire carrying constant current i.

A clockwise current is induced in the loop when loop is pulled towards:

Choices

Choice (4) Response
a.

E

b.

N

c.

W

d.

S

Question number: 51

» Ray Optics » Snell's Law

Appeared in Year: 2012

MCQ▾

Question

A ray of white light is incident on a spherical water drop whose center is C as shown below. When observed from the opposite side, the emergent light:

Ray of white light incident on a spherical water drop.

Ray of White Light Incident on a Spherical Water Drop.

Figure shows a ray of white light is incident on a spherical water drop whose center is C.

Choices

Choice (4) Response
a.

will split into different colors such that the angles of deviation will be same for all colors

b.

will be internally reflected

c.

will be white and will emerge without deviating

d.

will split into different colors such that the angles of deviation will be different for different colors

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