KVPY Stream-SA (Class 11) Physics: Questions 4 - 7 of 252

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Question number: 4

Appeared in Year: 2011

MCQ▾

Question

A convex lens is used to form an image of an object on a screen. If the upper half of the lens is blackened so that it becomes opaque, then

Choices

Choice (4) Response

a.

the image position shifts towards the lens

b.

the image position shifts away from the lens

c.

only half of the image will be visible

d.

the brightness of the image reduces

Question number: 5

Appeared in Year: 2011

MCQ▾

Question

A body of 0.5 kg moves along the positive x-axis under the influence of a varying force F (in Newton) as shown below.

If the speed of the object at x = 4 m in 3.16 ms –1 then its speed at x = 8m is,

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 6

Appeared in Year: 2011

MCQ▾

Question

A juggler tosses a ball up in the air with initial speed u. At the instant it reaches its maximum height H, he tosses up a second ball with the same initial speed. The two balls will collide at a height.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 7

MCQ▾

Question

Consider a circuit below. The bulb will light up if

Choices

Choice (4) Response

a.

S 1, S 2 and S 3 all are closed.

b.

S 1 is closed but S 2 and S 3 are open

c.

S 2 and S 3 are closed but S 1 is open

d.

S 1 and S 3 are closed but S 2 is open

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