NDA General Ability 18 April 2021 | Physics Question 378 | General Science

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NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Mirage is an illustration of

only dispersion of light.

only reflection of light.

only total internal reflection of light.

both refraction and total internal reflection of light.

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Consider the following statements about Light year:

1. Light year is a unit for measurement of very large distances.

2. Light year is a unit for measurement of very large time intervals.

3. Light year is a unit for measurement of intensity of light.

Which of the statements given above is/are correct?

1, 2 and 3

2 and 3 only

1 and 2 only

1 only

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Which one of the following regarding density of water at atmospheric pressure is correct?

Density of water at 4°C is 1000 kg/m³.

Density of water at 0°C is 1000 kg/m³.

Density of water at 0°C is 100 kg/m³.

Density of water at 4°C is 10 kg/m³.

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Which of the following pairs of physical phenomenon and the discover is/are correctly matched?

1. James Chadwick	Photoelectric
2. Albert Einstein	Neutron
3. Marie Curie	Radium

Select the correct answer using the code given below:

1, 2 and 3

1 and 2 only

2 and 3 only

3 only

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