KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 38 - 40 of 268

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 268 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: 38

» Oscillations and Waves » Periodic Functions

Appeared in Year: 2010

MCQ▾

Question

A particle of mass m undergoes oscillations about x = 0 in a potential given by , where V0, k, a are constants. If the amplitude of oscillation is much smaller than a, the time period is given by,

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 39

» Center of Mass » Centre of Mass of a Two-Particle System

Appeared in Year: 2011

MCQ▾

Question

A narrow but tall cabin is falling freely near the earth’s surface. Inside the cabin, two small stones A and B are released from rest (relative to the cabin). Initially A is much above the centre of mass and B much below the centre of mass of the cabin. A close observation of the motion of A and B will reveal that –

Choices

Choice (4) Response

a.

A and B continue to be exactly at rest relative to the cabin

b.

A and B move slightly towards each other vertically

c.

A and B fall to the bottom of the cabin with constant acceleration due to gravity

d.

A moves slowly upward and B moves slowly downward relative to the cabin

Question number: 40

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2011

MCQ▾

Question

In a Young’s double slit set-up, light from a laser source falls on a pair of very narrow slits separated by 1.0 micrometer and bright fringes separated by 1.0 millimeter are observed on a distant screen. If the frequency of the laser light is doubled, what will be the separation of the bright fringes?

Choices

Choice (4) Response

a.

2.0 mm

b.

0.25 mm

c.

1.0 mm

d.

0.5 mm

f Page
Sign In