KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 194 - 197 of 253

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Question number: 194

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A body moving in a straight line covers a distance of 12 m in the 2th second and 22 m in 5th sec. Distance will it cover in 7th second is –

Choices

Choice (4) Response

a.

22.21

b.

15.51

c.

17.53

d.

28.66

Question number: 195

» Ray Optics » Magnification

MCQ▾

Question

An object of height 2.5 cm is placed at a distance of 10 cm in front of a concave lens of power, – 12 diopters. The height of the image is –

Choices

Choice (4) Response

a.

2.46

b.

1.46

c.

1.13

d.

2.13

Question number: 196

» Thermodynamics » Concept of Temperature

MCQ▾

Question

During the melting of a slab of ice at 273 K at atmospheric pressure,

  1. Positive work is done by the ice water system on the atmosphere.
  2. Positive work is done on the ice water system by the atmosphere.
  3. Internal energy of the ice water system increases
  4. Internal energy of the ice water system decreases.

Choices

Choice (4) Response

a.

(1) and (4) are correct

b.

(1), (2) and (3) are correct

c.

(2) and (3) are correct

d.

(1) and (3) are correct

Question number: 197

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

At the moment t = 0, a particle leaves the origin and moves in positive direction of x – axis. Its velocity varies with time as,

Equation

Where v0 is the initial velocity vector whose modulus equals Equation , Equation . The moments of time when the particle is at the distance + 10 cm is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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