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Q1. If the size of an atom (?1A) were enlarged to the tip of a sharp pin (?10-5), how large would the height of Mount Everest be?

(a) 107m
(b) 108m
(c) 1010m
(d) 109m

Q2. A 35mm wide slide with a 24mm?36mm picture is projected on a screen placed 12cm from the slide. The image of the slide picture on the screen measures 1m?1.5m. What is the linear magnification of the projector-screen arrangement?

(a) 150.6
(b) 1736
(c) 1524
(d) 41.67

Q3. In a submarine fitted with SONAR, the time interval between the generation of an ultrasonic wave and the receipt of its echo is 200s. What is the distance of the enemy submarine? The speed of the sound in water is 1.450km/s.

(a) 2.811 km
(b) 112.5 km
(c) 145 km
(d) 100 km

Q4. The angular diameter of the sun is 1920??. If the distance of the sun from the earth is 1.5?1011 m, what is the linear diameter of the sun?

(a) 4.85?10-6 m
(b) 1.4?109m
(c) 2.35?108 m
(d) 1.4?108m

Q5. The moon is observed from two diametrically opposite points A and B on the earth. The angle ? subtended at the moon by the two directions of observation is 1?54?. Given the diameter of the earth to be 1.276?107 m, compute the distance of the moon from the earth.

(a) 3.84?108 m
(b) 1.276?107 m
(c) 3.84m
(d) 1.27m

Q6. The shadow of a tower standing on a level plane is found to be 50m longer when the sun?s altitude is 30? that when it is 60?. Find the height if the tower.

(a) 1.732 m
(b) 43.3 m
(c) 25 m
(d) 25?3 m

Q7. Which of the following is used to find the depth of the sea-bed?

(a) Laser method
(b) Sonar method
(c) Radar method
(d) Reflection or echo method

Q8. What is the method for determining the distance of a superior planet?

(a) Copernicus method
(b) Kepler?s third law of planetary motion
(c) Parallax method
(d) Triangulation method

Q9. What is the method for determining the distance of an inferior planet?

(a) Kepler?s third law of planetary motion
(b) Triangulation method
(c) Parallax method
(d) Copernicus method

Q10. Which of the following is an inferior planet to earth?

(a) Mercury
(b) Saturn
(c) Pluto
(d) Neptune


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