KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 213 - 216 of 268

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Question number: 213

» Center of Mass » Centre of Mass of a Rigid Body

Appeared in Year: 2015

MCQ▾

Question

Two spherical object each of radii R and mass m1 and m2 are suspended using two strings of equal length L as shown in the figure (R < < L). The angle, θ which mass m2 makes with the vertical is approximately,

Two spherical objects are suspended using two strings

Two Spherical Objects Are Suspended Using Two Strings

In figure two spherical objects each of radii R and mass m1 and m2 are suspended using two strings of equal length L.

Choices

Choice (4) Response

a.

m2R(m1+m2)L

b.

2m1R(m1+m2)L

c.

2m2R(m1+m2)L

d.

m1R(m1+m2)L

Question number: 214

» Work, Energy and Power » Conservation of Mechanical Energy

MCQ▾

Question

A child is sitting on a swing. Its minimum and maximum heights from the ground are 0.55 m and 3 m respectively. What will be its maximum speed?

Choices

Choice (4) Response

a.

14ms

b.

12ms

c.

7ms

d.

5ms

Question number: 215

» Atoms and Nuclei » Binding Energy Per Nucleon

Appeared in Year: 2014

MCQ▾

Question

A solid sphere slipping about a horizontal axis with an angular velocity ω is placed on a horizontal surface. Subsequently it rolls without slipping with an angular velocity of –

Choices

Choice (4) Response

a.

7ω5

b.

2ω7

c.

2ω5

d.

ω

Question number: 216

» Gravitation » Energy

Appeared in Year: 2015

MCQ▾

Question

An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is,

Choices

Choice (4) Response

a.

GM5R

b.

22GM5R

c.

GM2R

d.

3GM2R

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