# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 121 - 124 of 268

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## Question number: 121

Appeared in Year: 2015

MCQ▾

### Question

The moments of inertia of a non – uniform circular disc (of mass M and radius R) about four mutually perpendicular tangents AB, BC, CD, DA are I1, I2, I3 and I4, respectively (the square ABCD circumscribes the circle). The distance of the centre of mass of the disc from its geometrical centre is given by,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 122

Appeared in Year: 2015

MCQ▾

### Question

Two blocks of masses 5m and 4m in contact on a smooth table. A force P is first applied horizontally on block of mass 5 m and then on 4m. The contact forces between the two blocks in the two cases in the ratio

### Choices

Choice (4) Response

a.

3: 2

b.

5: 3

c.

2: 3

d.

1: 2

## Question number: 123

MCQ▾

### Question

A homogeneous sphere of mass M and radius R has moment of inertia I about its diameter. A concentric sphere of radius is carved out from the sphere. What is the moment of inertia of the remaining part about the diameter?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 124

Appeared in Year: 2013

MCQ▾

### Question

The figure below shows a circuit and its input voltage as function of time t.

Assuming the diodes to be ideal, which of the following graphs depicts the output voltage V0 as function of time t?

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page