# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 27 - 30 of 253

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## Question number: 27

Appeared in Year: 2010

MCQ▾

### Question

positive charges of magnitude q are placed on a circle of radius R in a manner that they are equally spaced. A charge Q is placed at the center. If one of the charges q is removed, then the force on Q is

### Choices

Choice (4) Response

a.

away from the position of the removed charge

b.

away from the position of the removed charge

c.

towards the position of the removed charge

d.

Zero

## Question number: 28

Appeared in Year: 2011

MCQ▾

### Question

In the following circuit, the 1 Ω resistor dissipates power P. If the resistor is replaced by 9 Ω, the power dissipated in it is

### Choices

Choice (4) Response

a.

3P

b.

9P

c.

d.

P

## Question number: 29

Appeared in Year: 2011

MCQ▾

### Question

A nucleus of lead emits two electrons followed by an alpha particle. The resulting nucleus will have

### Choices

Choice (4) Response

a.

80 protons and 130 neutrons

b.

78 protons and 134 neutrons

c.

82 protons and 130 neutrons

d.

82 protons and 128 neutrons

## Question number: 30

Appeared in Year: 2011

MCQ▾

### Question

A small child tries to moves a large rubber toy placed on the ground. The toy does not move but gets deformed under her pushing force which is obliquely upward as shown. Then,

### Choices

Choice (4) Response

a.

The normal force by the ground is equal and opposite to the weight of the toy

b.

The resultant of the pushing force , weight of the toy, normal force by the ground on the toy and the frictional force is zero.

c.

The pushing force of the child is balanced by the equal and opposite frictional force

d.

The pushing force of the child is balanced by the total internal force in the toy generated due to deformation.

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