KVPY Stream-SA (Class 11) Physics: Questions 128 - 129 of 252

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Question number: 128

» Kinematics » Position-Time Graphs

Appeared in Year: 2015

MCQ▾

Question

An object at rest at the origin begins to move in the +x direction with a uniform acceleration of 1 m/s2 for 4s and then it continues moving with a uniform velocity of 4 m/s in the same direction. The xt graph for object’s motion will be

Choices

Choice (4) Response

a.

The graph of x verses t – Choice A

The Graph of X Verses T – Choice a

In figure graph of position verses time is shown. An object at rest at the origin being to move in the + x direction with uniform acceleration of 1 m/s2 for 4s and then it continues moving with a uniform velocity of 4 m/s in the same direction.

b.

The graph of x verses t – Choice B

The Graph of X Verses T – Choice B

In figure graph of position verses time is shown. An object at rest at the origin being to move in the + x direction with uniform acceleration of 1 m/s2 for 4s and then it continues moving with a uniform velocity of 4 m/s in the same direction.

c.

The graph of x verses t – Choice C

The Graph of X Verses T – Choice C

In figure graph of position verses time is shown. An object at rest at the origin being to move in the + x direction with uniform acceleration of 1 m/s2 for 4s and then it continues moving with a uniform velocity of 4 m/s in the same direction.

d.

The graph of x verses t

The Graph of X Verses T

The equation of speed in term of acceleration and time is written as,

Question number: 129

» Current Electricity » Electric Current

MCQ▾

Question

A current of 0.3 A flows through a 30 Ω resistor represented by the circuit diagram. The current in the 100 Ω resistor is,

Circuit diagram of combination of four resistors

Circuit Diagram of Combination of Four Resistors

In figure circuit diagram of combination of four resistors is shown. 0.3 A current is passing through 30 (ohm) resistor. Current i is passing through parallel combination of 25 (ohm) and 15 (ohm) resistors.

Choices

Choice (4) Response

a.

1.26 A

b.

1.66 A

c.

0.56 A

d.

0.89 A

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