KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 87 - 90 of 253

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 253 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 87

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A balloon contains 350 m3 of He at 330 C and 1.5 atmosphere pressure. The volume of He at -40 C and 1 atmosphere pressure will be,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 88

» Electrostatics » Electrostatic Potential Energy

Appeared in Year: 2014

MCQ▾

Question

Two equal charges of magnitude Q each are placed at a distance d apart. Their electrostatic energy is E. A third charge Equation is brought midway between these two charges. The electrostatic energy of the system is now

Choices

Choice (4) Response

a.

E

b.

-2E

c.

-E

d.

0

Question number: 89

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 2014

MCQ▾

Question

A bar magnet falls with its north-pole pointing down through the axis of a copper ring. When viewed from above, the current in the ring will be.

Choices

Choice (4) Response

a.

Counter clockwise while the magnet is above the plane of the ring, and clockwise while below the plane of the ring

b.

Counter clockwise throughout

c.

Clockwise while the magnet is above the plane of the ring and counter clockwise while below the plane of the ring

d.

Clockwise throughout.

Question number: 90

» Electrostatics » Electric Potential

Appeared in Year: 2013

MCQ▾

Question

An electron with an initial speed of 4.0 × 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 lower potential to higher potential through a potential difference of 45 V.

b.

The electron moves from a region of higher potential to lower potential through a potential difference of 45 V.

c.

The electron moves from a region of lower potential to higher potential through a potential difference of 11.4 μV.

d.

The electron moves from a region of higher potential to lower potential through a potential difference of 11.4 μV.

f Page
Sign In