Physics - Study Mode

[#816] Submerged objects can be located using
Correct Answer

(B) Sonar

Explanation

Solution: Sonar (originally an acronym for Sound Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.

[#817] Gamma rays can cause
Correct Answer

(A) Gene mutation

Explanation

Solution: Gamma rays can cause Gene mutation.

[#818] Green house effect is the heating up of the Earth's atmosphere which is due to
Correct Answer

(C) The infra-red rays

Explanation

Solution: Green house effect is the heating up of the Earth's atmosphere which is due to infrared rays.

[#819] Visible light has a higher frequency than
Correct Answer

(A) Radio waves

Explanation

Solution: Visible light has a higher frequency than radio waves.

[#820] Which of the following has the longest wavelength?
Correct Answer

(A) Infrared radiation

Explanation

Solution: Infrared radiation has the longest wavelength.