KVPY Stream-SA (Class 11) Physics: Questions 189 - 193 of 252

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Question number: 189

» Current Electricity » Electric Current

MCQ▾

Question

The current in 2Ω resistance in the circuit show below is,

Circuit diagram having combination of four resistors

Circuit Diagram Having Combination of Four Resistors

In figure combination of four resistors. A battery and a capacitor is also connected in the circuit.

Choices

Choice (4) Response

a.

0.33 A

b.

0.45 A

c.

0.5 A

d.

1 A

Question number: 190

» Electrostatics » Capacitors

MCQ▾

Question

When a capacitor is connected to a battery,

Choices

Choice (4) Response

a.

There is no flow of current

b.

The current keeps on increasing, reaching a maximum value until the capacitor is fully charged.

c.

A varying current keeps on flowing in the circuit

d.

Initially a current flow in the circuit and then decreases to zero

Question number: 191

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A rocket is fired upward from the earth’s surface such that it creates an acceleration of 21.7 m s-2. If after 10 s, its engine is switched off, the maximum height of the rocket from earth’s surface would be-

Choices

Choice (4) Response

a.

3490 m

b.

2435.5 m

c.

2450 m

d.

3487.5 m

Question number: 192

» Ray Optics » Mirror Formula

MCQ▾

Question

In a concave mirror, an object is placed at a distance 25 cm from the focus and its image is formed at a distance 4 cm from the focus. The focal length of the mirror is,

Choices

Choice (4) Response

a.

15 cm

b.

20 cm

c.

10 cm

d.

5 cm

Question number: 193

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

What will the value of R in the following electric circuit?

 An electric circuit consists of combination of resistors

an Electric Circuit Consists of Combination of Resistors

In figure an electric circuit consists of two resistance in series and one resistance is perpendicular to them.

Choices

Choice (4) Response

a.

3 Ω

b.

1 Ω

c.

2 Ω

d.

4 Ω

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