KVPY Stream-SA (Class 11) Physics: Questions 240 - 244 of 252

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Question number: 240

» Work, Energy and Power » Potential Energy

MCQ▾

Question

Potential energy of a spring when stretched by 5 cm is U. When stretched by 15 cm, its potential energy will be,

Choices

Choice (4) Response

a.

U3

b.

3U

c.

9U

d.

U9

Question number: 241

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

N identical water drops, carrying equal charge q and having the same potential V, merge together. The energy of the new drop is given as,

Choices

Choice (4) Response

a.

N23U

b.

N43U

c.

N13U

d.

N53U

Question number: 242

» Work, Energy and Power » Power

MCQ▾

Question

A horse pulse a wagon with a force of 720 N at an angle of 600 with the horizontal at a speed of 15 km h-1. The power of the horse is,

Choices

Choice (4) Response

a.

1000 W

b.

2000 W

c.

500 W

d.

1500 W

Question number: 243

» Physics and Measurement » Errors in Measurement

Appeared in Year: 2016

MCQ▾

Question

The length and width of a rectangular room are measured to be 3.95±0.05m and 3.05±0.05m , respectively. The area of the floor is –

Choices

Choice (4) Response

a.

12.05±0.005m2

b.

12.05±0.40m2

c.

12.05±0.01m2

d.

12.05±0.34m2

Question number: 244

» Magnetic Effects of Current and Magnetism » Ampere's Law

Appeared in Year: 2016

MCQ▾

Question

In an experiment, setup A consists of two parallel wires which carry currents in opposite directions as shown in the figure. A second setup B is identical to setup A, except that there is a metal plate between the wires.

Quadrilateral poly1 Quadrilateral poly1: Polygon C, D, E, FSegment f Segment f: Segment [A, B] Segment f Segment f: Segment [A, B] Segment f Segment f: Segment [A, B] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment f_2 Segment f_2: Segment [A_3, B_3] Segment c Segment c: Segment [C, D] of Quadrilateral poly1Segment d Segment d: Segment [D, E] of Quadrilateral poly1Segment e Segment e: Segment [E, F] of Quadrilateral poly1Segment f_4 Segment f_4: Segment [F, C] of Quadrilateral poly1Segment g Segment g: Segment [B_1, A_1] Segment g Segment g: Segment [B_1, A_1] Segment g Segment g: Segment [B_1, A_1] Segment h Segment h: Segment [B_2, A_2] Segment h Segment h: Segment [B_2, A_2] Segment h Segment h: Segment [B_2, A_2] Setup A text1 = “Setup A”Setup B text1_1 = “Setup B”

Two Wire Carrying Current in Opposite Sides

In figure two wires carrying current in opposite sides in setup A and in setup B a metal plate placed between two wires.

Let FA and FB be the magnitude of the force between the two wires in setup A and setup B, respectively.

Choices

Choice (4) Response

a.

FA=FB0

b.

FA<FB

c.

FA>FB0

d.

FA>FB=0

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