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Answer: (c) All three
Explanation
Statement 1 is correct. Gravitational waves are indeed ripples in the fabric of spacetime, and they are generated by the acceleration of massive objects.
Statement 2 is correct. The existence of gravitational waves was first predicted by Albert Einstein in 1916 as a consequence of his General Theory of Relativity.
Statement 3 is correct. The first direct detection of gravitational waves was made by the LIGO collaboration in September 2015, and the discovery was announced in February 2016.

Question

With the reference to the gravitational waves, consider the following statements:

1.Gravitational waves are ripples in spacetime created by movements of massive objects.

2. The existence of gravitational waves was proposed in Albert Einstein's General Theory of Relativity in 1915.

3. For the first time, the gravitational waves were detected in 2015.

Just 2-page October Current Affairs bilingual quick revision notes

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Consider the following statements regarding Dhvani Missile:
1. It is a subsonic missile being developed by India’s Defence Research and Development Organisation (DRDO).
2. It has an estimated range between 500 to 1500 kilometers.

With reference to the International Health Regulations (IHR), consider the following statements:

1. IHR is a legally binding instrument of the World Health Organization (WHO)
2. Its aim is only to provide guidelines for international travel and trade, without addressing the spread of diseases.

With reference to the SARAL (Simplified and Automated Research Amplification and Learning), consider the following statements:
1. It is an AI-based tool that converts complex research papers into easy-to-understand summaries.
2. It has been developed by the C-DAC of India.

.

Answer: (b) 2 only

Statement 1 is incorrect. The Dassault Mirage 2000 is a single-engine, 4th generation fighter jet.

Statement 2 is correct. The HAL Tejas is a light combat aircraft with a delta-winged design.

Statement 3 is incorrect. The Dassault Rafale is a supersonic fighter jet, not a hypersonic one.