Dual Nature of Matter and Radiation (KVPY Stream-SA (Class 11) Physics): Questions 1 - 2 of 2

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Question number: 1

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

Question

Solar energy is incident normally on the earth’s surface at the rate of about 2.2 MW m-2. The distance between the earth and the sun is 1.5 × 1011 m. Energy (E) and mass (m) are related by Einstein equation E = mc2 where c (3 × 108ms-1) is the speed of light in free space. The decrease in the mass of the sun is

Choices

Choice (4) Response

a.

7Gkgs

b.

5Tkgs

c.

5Gkgs

d.

7Tkgs

Question number: 2

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

Appeared in Year: 2013

MCQ▾

Question

Solar energy is incident normally on the earth’s surface at the rate of about 1.4 kW m-2. The distance between the earth and the sun is 1.5 × 1011 m. Energy (E) and mass (m) are related by Einstein equation E = mc2 where c (3 × 108ms-1) is the speed of light in free space. The decrease in the mass of the sun is

Choices

Choice (4) Response

a.

109kgs

b.

1011kgs

c.

1030kgs

d.

1026kgs

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