KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 245 - 248 of 268

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Question number: 245

» Oscillations and Waves » Periodic Functions

MCQ▾

Question

A mass M is suspended from a spring of negligible mass. The spring is pilled a little and then released so that the mass executes SHM of time period T. If the mass is increased by m, the time period becomes 3T2 . Then the ratio of mM is:

Choices

Choice (4) Response

a.

35

b.

169

c.

53

d.

259

Question number: 246

» Thermodynamics » Work in Thermodynamic Process and PV Diagrams

Appeared in Year: 2015

MCQ▾

Question

An ideal gas undergoes a circular cycle centered at 4atm, 4 lit as shown in the diagram. The maximum temperature attained in this process is close to,

PV diagram of a circular cycle

PV Diagram of a Circular Cycle

In figure an ideal gas undergoes a circular cycle centered at 4 atm and 4 lit is shown by PV diagram.

Choices

Choice (4) Response

a.

36R

b.

30R

c.

16R

d.

24R

Question number: 247

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

An 8 kg block of ice, released from rest at the top of a 2.1 m long smooth ramp, slides down and falls with a velocity 3.3 ms-1. Find angle of the ramp with horizontal.

Choices

Choice (4) Response

a.

220

b.

260

c.

150

d.

120

Question number: 248

» Electrostatics » Capacitors

Appeared in Year: 2014

MCQ▾

Question

An electron enters a parallel plate capacitor with horizontal speed u and is fond to deflect by angle θ on leaving the capacitor as shown. It is found that tanθ=0.4 and gravity is negligible,

An electron enters a parallel plate capacitor

An Electron Enters a Parallel Plate Capacitor

In figure an electron enters a parallel plate capacitor with horizontal speed u and is found to deflect by angle (theta) on leaving the capacitor.

If the initial horizontal speed is doubled, then tan θ will be,

Choices

Choice (4) Response

a.

0.2

b.

0.8

c.

0.1

d.

1.6

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