The angle of $1°$ (degree) will be equal to:

(Use )

Subtopic:  Measurement & Measuring Devices |
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A man wishes to estimate the distance of a nearby tower from him. He stands at point A in front of tower C and spots a very distant object O in line with AC. He then walks perpendicular to AC up to B, a distance of 100 m, and looks at O and C again. Since O is very distant, the direction BO is practically the same as AO; but he finds the line of sight of C shifted from the original line of sight by an angle θ = $40°$ (θ is known as ‘parallax’), the distance of the tower C from his original position A is:

(1) 119 m

(2) 126 m

(3) 320 m

(4) 219 m

Subtopic:  Measurement & Measuring Devices |
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To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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The moon is observed from two diametrically opposite points A and B on Earth. The angle θ subtended at the moon by the two directions of observation is $1°$ 54. Given the diameter of the Earth to be about 1.276 × ${10}^{7}$ m, the distance of the moon from the Earth is:

Subtopic:  Measurement & Measuring Devices |
To view explanation, please take trial in the course below.
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To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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The Sun’s angular diameter is measured to be 1920′′. The distance of the Sun from the Earth is  The diameter of the Sun:

1.

2.

3.

4.

Subtopic:  Measurement & Measuring Devices |
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If the size of a nucleus (in the range of ) is scaled up to the tip of a sharp pin, what roughly is the size of an atom? Assume tip of the pin to be in the range

1.

2.

3.

4.

Subtopic:  Measurement & Measuring Devices |
To view explanation, please take trial in the course below.
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NEET 2023 - Target Batch - Aryan Raj Singh
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We measure the period of oscillation of a simple pendulum. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71 s and 2.80 s. The average absolute error and percentage error, respectively, are:

1.  0.22 s and 4

2.  0.11 s and 4

3.  4 and 0.11 s

4.  5 and 0.22 s

Subtopic:  Measurement & Measuring Devices |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh