KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics: Questions 47 - 49 of 250

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Question number: 47

» Kinematics » Position-Time Graphs

Appeared in Year: 2011

MCQ▾

Question

A particle moves in a plane along an elliptic path given by x2a2+y2b2=1. At point (0, b), the x – component of velocity is u. The y – component of acceleration at this point is –

Choices

Choice (4) Response

a.

u2b

b.

u2a

c.

bu2a2

d.

au2b2

Question number: 48

» Ray Optics » Snell's Law

Appeared in Year: 2011

MCQ▾

Question

A material is embedded between two glass plates. Refractive index n of the material varies with thickness as shown below. The maximum incident angle (in degrees) on the material for which beam will pass through the material is –

Graph of refractive index verses thickness

Graph of Refractive Index Verses Thickness

Figure shows refractive index n of material varies with thickness x.

Choices

Choice (4) Response

a.

60.0

b.

53.1

c.

43.5

d.

32.3

Question number: 49

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2012

MCQ▾

Question

In a Young’s double slit experiment the intensity of light at each slit is Ι0. Interference pattern is observed along a direction parallel to the line S1 S2 on screen S.

Basic set up of Young’s double slit experiment

Basic Set Up of Young’S Double Slit Experiment

In figure a basis set up of Young’s double slit experiment is shown, in which two slits S1 and S2 in front of S

The minimum, maximum, and the intensity averaged over the entire screen are respectively.

Choices

Choice (4) Response

a.

0, 4Ι0, 2Ι0

b.

0, 4Ι0, Ι0

c.

0, 2Ι0, Ι0

d.

I 0,2I0,3I02

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