Question : Which of the following radiations has the least wavelength?

Option 1: X-rays

Option 2: α-rays

Option 3: γ-rays

Option 4: β-rays

Question : What does the 'ozone layer' absorb?

Option 1: Infrared rays

Option 2: Ultraviolet rays

Option 3: X - rays

Option 4: Gamma - rays

Question : Directions: Five friends Alpha, Beta, Gamma, Rho, and Theta are arranged in a row facing north but not necessarily in the same order. Beta sits at the left end of the row. Only two people are sitting between Alpha and Gamma. Alpha sits immediately next to the Beta and Rho sits second to the right of Beta. Who sits between Rho and Gamma?

Option 1: Alpha

Option 2: Theta

Option 3: Beta

Option 4: No one

Question : Cobalt therapy is the medical use of rays from the radioisotope cobalt-60 to treat conditions such as cancer.

Option 1: alpha

Option 2: beta

Option 3: gamma

Option 4: Ultraviolet

Question : The greenhouse effect is the heating up of the Earth's atmosphere which is due to:

Option 1: the ultraviolet rays

Option 2: γ-rays

Option 3: the infrared rays

Option 4: X-rays