KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 28 - 30 of 253

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Question number: 28

» Current Electricity » Electrical Energy and Power

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

Circuit diagram of two resistors and a battery (Circuit 1)

Circuit Diagram of Two Resistors and a Battery (Circuit 1)

Figure shows two resistors and battery connected in series.

Choices

Choice (4) Response

a.

3P

b.

9P

c.

Equation

d.

P

Question number: 29

» Atoms and Nuclei » Atomic Masses

Appeared in Year: 2011

MCQ▾

Question

A nucleus of lead Equation 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

» Laws of Motion » Equilibrium of Concurrent Forces

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 Equation which is obliquely upward as shown. Then,

A large rubber toy is pushed by a child

A Large Rubber Toy Is Pushed by a Child

Figure shows a small child tries to moves a large rubber toy placed on the ground.

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 Equation , weight of the toy, normal force by the ground on the toy and the frictional force is zero.

c.

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

d.

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

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