KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 129 - 131 of 253

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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

Question number: 130

» Electrostatics » Electric Potential

MCQ▾

Question

An electron with an initial speed of 5.5 × 106 ms-1 is brought to rest by an electric field. The mass and charge of an electron are 9 × 10-31 kg and 1.6 × 10-19 C, respectively. Identify the correct statement

Choices

Choice (4) Response

a.

The electron moves from a region of higher potential to lower potential through a potential difference of 22.4 μV.

b.

The electron moves from a region of lower potential to higher potential through a potential difference of 85.07 V.

c.

The electron moves from a region of higher potential to lower potential through a potential difference of 85.07 V

d.

The electron moves from a region of lower potential to higher potential through a potential difference of 22.4 μV.

Question number: 131

» Gravitation » Geo-Stationary Satellites

Appeared in Year: 2015

MCQ▾

Question

If the axis of rotation of the earth were extended into space then it would pass close to

Choices

Choice (4) Response

a.

The sun

b.

The pole star

c.

The moon

d.

The centre of mass of all the planets in the solar system

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