A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case is formed:

Which of the following statements is/are correct?

$1$. Image formed by concave lens is always virtual, erect and smaller than the object.

$2$. Convex lens used in magnifying glass

Select the correct answer using the code given below:

How are neutrinos produced (created)?

$1$. Collision of two Black holes

$2$. Reactions between cosmic radiation and the Earth's atmosphere

$3$. Nuclear reactions inside the Sun

Select the correct answer using the codes given below:

Which of the following are technological applications of Total Internal Reflection?

$1$. Mirage

$2$. Diamond

$3$. Prism

$4$. Optical Fiber

Select the correct answer using the code given below: