NTSE Exam Papers : 2017 Punjab State (SCHOLASTIC APTITUDE TEST)

• PART -2
• (SCHOLASTIC APTITUDE TEST)
• (Q. Nos. 51 to 100)
• Max. Marks : 50
• State : Punjab

51. A body of mass 1 kg initially at rest is moved by a horizontal force of 0.5 N on a smooth frictionless table. The work done by force in 10 sec. is
(A) 10.5J
(B) 12.5 J
(C) 20 J 
(D) 22J

52. A boy hears an echo of his own voice from a distant hill after 2 seconds. The speed of sound in air is 350 m/s. The distance of the hill from the boy is
(A) 175 m
(B) 200 m
(C) 350 m 
(D) 250 m

53. An electric heater consists of 20m length of manganin wire of 0.23m2 crossectional area. Wattage of heater when potential difference across the heater is 200 V is
(A) 10⁶W 
(B) 100 W
(C) 10⁹W 
(D) 10³W

54. A beam of white light when passes through a glass prism, a spectrum is observed. But when same beam of light passes through hollow grass prism then
(A) Spectrum is same 
(B) Spectrum becomes brighter
(C) There will be no spectrum 
(D) Colours of spectrum reversed

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Courtesy: NTSE