Which of the following diagrams involves a larger image?

The correct answer is picture 1 because the grey arrow represents the real object size and the orange - yellowish arrow represents the image size. So since the image size is bigger than the object size. So this means picture 1 has a larger image.

Explanation :

When the object is placed between focus and the optical center, the image we get is enlarged. The image is formed on the same side of the lens. The formed image is virtual and erect.

This is the only case of the convex lens where the formed image is enlarged.

Hence, the correct option is attached.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.