KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics: Questions 53 - 55 of 250

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 250 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: 53

» Current Electricity » Series and Parallel Combinations of Resistors

Appeared in Year: 2011

MCQ▾

Question

Two batteries V1 and V2 are connected to three resistors as shown below.

Circuit diagram consist of two batteries and three resistors

Circuit Diagram Consist of Two Batteries and Three Resistors

In figure combination of three resistors are connected with two batteries.

If V1=2V and V2=0V, the current I=3mA . If V1=0V and V2=4V , the current I=4mA. Now, if V1=10V and V2=10V , the current I will be –

Choices

Choice (4) Response

a.

7mA

b.

25mA

c.

15mA

d.

20mA

Question number: 54

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2012

MCQ▾

Question

A body is executing simple harmonic motion of amplitude a and period T about the equilibrium position x=0 . Large numbers of snapshots are taken at random of this body in motion. The probability of the body being found in a very small interval x to x+ dx is highest at,

Choices

Choice (4) Response

a.

x=±a

b.

x=±a2

c.

x=0

d.

x=±a2

Question number: 55

» Kinematics » Velocity-Time Graphs

Appeared in Year: 2012

MCQ▾

Question

A particle released from rest is falling through a thick fluid under gravity. The fluid exerts a resistive force on the particle proportional to the square of its speed. Which one of the following graphs best depicts the variation of speed v with time t is?

Choices

Choice (4) Response

a.

Graph of variation of speed with time- Choice A

Graph of Variation of Speed With Time- Choice A

In figure a graph of variation of speed v with time t is shown.

b.

Graph of variation of speed with time Choice B

Graph of Variation of Speed With Time Choice B

In figure a graph of variation of speed v with time t is shown.

c.

Graph of variation of speed with time Choice C

Graph of Variation of Speed With Time Choice C

In figure a graph of variation of speed v with time t is shown.

d.

 Graph of variation of speed with time Choice D

Graph of Variation of Speed With Time Choice D

In figure a graph of variation of speed v with time t is shown.

Sign In