previous year physics question paper asked ssc chsl 2016 exam

Q31.The SI unit of intensity of sound is ______.
ध्वनि की तीव्रता का SI इकाई ______ है।
17-Jan-2017
Options:
1) watt per square meter
2) joule per square meter
3) newton per square meter
4) tesla per square meter
Correct Answer: watt per square meter
Sound intensity is defined as the power carried by sound waves per unit area.
The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m2).

Q32.Why does a fountain pen leak in aeroplane flying at a height?
एक हवाई जहाज़ में एक फव्वारा पेन लीक ऊंचाई पर उड़ान क्यों करता है?
17-Jan-2017
Options:
1) Because of reduced viscosity of the ink in the pen
2) Because of increased viscosity of the ink in the pen
3) Because of higher atmospheric pressure outside the pen
4) Because of lower atmospheric pressure outside the pen
Correct Answer: Because of lower atmospheric pressure outside the pen
The atmospheric pressure decreases with altitude hence, air pressure is low at higher altitudes. Due to this difference in air pressure, the air inside the pen forces the ink to come out.

Q33.What are the two kinds of Rotatory motion?
घूर्णन गति के दो प्रकार कौन से हैं?17-Jan-2017
Options:
1) Spin and Vibrational motion
2) Spin and Orbital motion
3) Spin and Translatory motion
4) Spin and Projectile motion
Correct Answer: Spin and Orbital motion
स्पिन और कक्षीय गति

Q34.______ is the perpendicular distance between point of application of force and axis of rotation.
______ बल के अनुप्रयोग के बिंदु और रोटेशन के धुरी के बीच सीधी दूरी को कहते है। 17-Jan-2017
Options:
1) Moment arm
2) Moment of Inertia
3) Altitude
4) Base
Correct Answer: Moment arm, आघूर्ण भुजा
A moment arm is simply the length between a joint axis and the line of force acting on that joint.
Every joint that is involved in an exercise has a moment arm.

Q35.The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is .

पृथ्वी की सतह से 2R की दूरी पर गुरुत्वाकर्षण (g) के कारण त्वरण का मान _____ होता है , जहां R पृथ्वी का त्रिज्या है 18­-Jan­-2017
Options:
1) g/3
2) g/4
3) g/9
4) g/2
Correct Answer: g/9
Value of acceleration due to gravity at height comparable with radius of earth is given by
gh = g(R/(R+h))2
In problem h = 2R
gh = g(R/(R+2R))2 = g/9
i.e. ( 1/9)th of acceleration due to gravity on surface of earth.

Q36.­ The unit of which physical quantity is not pascal?
किस भौतिक मात्रा की इकाई पास्कल नहीं है?18­-Jan-­2017
Options:
1) Moment of inertia
2) Pressure
3) Stress
4) Young’s modulus
Correct Answer: Moment of inertia

Q37.­ Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth.
पृथ्वी के केंद्र से 2R की ऊंचाई पर स्थित किसी व्यक्ति का वज़न _____ , जहां R पृथ्वी का त्रिज्या है।18­-Jan-­2017
Options:
1) remains same
2) becomes half
3) becomes twice
4) becomes one ­fourth
Correct Answer: becomes one¬ fourth

Q38.­ How can we measure specific gravity of milk?
हम दूध के विशिष्ट गुरुत्व को कैसे मापेंगे ?
18­Jan­2017
Options:
1) Using a viscometer
2) Using an odometer
3) Using a hygrometer
4) Using a hydrometer
Correct Answer: Using a hydrometer
Viscometer -> It is an instrument used to measure the viscosity of a fluid.
Odometer -> An instrument for measuring the distance travelled by a wheeled vehicle.
Hygrometer -> It is an instrument used for measuring the water vapor in the atmosphere

Q39.Who established the foundations of the Quantum theory?
किसने क्वांटम थ्योरी के नींव की स्थापना किसने की थी ?
18-­Jan-­2017
Options:
1) Max Planck
2) Mark Nicholas
3) Albert Einstein
4) Alfred Hitchcock
Correct Answer: Max Planck
Planck’s law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T.

Q40. In a motion, the axis of the rotation passes through an object, then the motion called
यदि गति में रहते हुए घूर्णन कि धुरी किसी वस्तु में से होकर गुजरती है , तो उस गति को ____ कहा जाता है 18-­Jan-­2017
Options:
1) Orbital motion
2) Circulatory motion
3) Spin motion
4) Oscillatory motion
Correct Answer: Spin motion

Q41.­ Instrument for measuring rainfall is called
वर्षा को मापने के लिए उपकरण कहलाता है 19­-Jan-­2017
Options:
1) Lucimeter
2) Galactometer
3) Hyetometer
4) Hygrometer
Correct Answer: Hyetometer
Lucimeter -> An instrument used to measure light intensity.
Galactometer -> An instrument, similar to a hydrometer, for measuring the relative density of milk. It is used to determine the fat content.
Hygrometer -> measuring the water vapor in the atmosphere.

Q42. If an object, on a free fall from a certain height, reaches the ground in 1 second, what is its velocity on the impact with the ground?
यदि कोई वस्तु, किसी निश्चित ऊँचाई से मुक्त रूप से गिराने पर वह 1 सेकंड में जमीन तक पहुंचती है, तो जमीन के साथ टकराने पर उसका वेग क्या होगा ? 19-­Jan-­2017
Options:
1) 4.9 m/s
2) 9.8 m/s
3) 14.7 m/s
4) 19.6 m/s
Correct Answer: 9.8 m/s
V= U + at

Q43. If in a motion, the axis of the rotation does not pass through the object, then the motion is called
यदि गति में रहते हुए घूर्णन कि धुरी किसी वस्तु में से होकर नहीं गुजरती है , तो उस गति को ____ कहा जाता है 19-­Jan-­2017
Options:
1) Spin motion
2) Oscillatory motion
3) Translatory motion
4) Orbital motion
Correct Answer: Orbital motion

Q44. ­ An object is in static equilibrium when it is .
एक वस्तु उस समय स्थिर संतुलन में होती है, जब वह 19-Jan-2017
Options:
1) at rest
2) moving in a circular path
3) moving with uniform velocity
4) accelerating at high speed
Correct Answer: at rest

Q45. _________ through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface.
______ एक समतल सतह के माध्यम से सतह के लिए सामान्य चुंबकीय प्रवाह घनत्व और सतह के क्षेत्र का गुणज है 19-Jan-2017
Options:
1) Magnetic susceptibility
2) Magnetic resonance
3) Magnetic flux
4) Magnetic pulse
Correct Answer: Magnetic flux
चुंबकीय प्रवाह
The SI unit of magnetic flux is the weber (Wb).
In derived units -> volt-seconds.
In CGS unit -> maxwell.
Magnetic flux is measured with a fluxmeter

Q46. Which among the following is not a unit of distance?
निम्न में से कौन सी दूरी की एक इकाई नहीं है? 20-Jan-2017
Options:
1) Light year
2) Longsec
3) Astronomical unit
4) Parsec
Correct Answer: Longsec

Q47. The apparent weight of a person in a lift which is moving down with uniform acceleration is
एक लिफ्ट जो एक समान वेग के साथ नीचे जा रही है, उसमे किसी व्यक्ति का स्पष्ट वजन _____ होता है 20-Jan-2017
Options:
1) greater than the weight when the person is stationary
2) twice the weight when the person is stationary
3) less than the weight when the person is stationary
4) same as the weight when the person is stationary
Correct Answer: less than the weight when the person is stationary

Q48. What is the angle between centripetal acceleration and tangential acceleration?
अपकेंद्री त्वरण और स्पर्शरेखा त्वरण के बीच कौन सा कोण होता है?
20-Jan-2017
Options:
1) 90°
2) 45°
3) 0°
4) 180°
Correct Answer: 90°

Q49. Rectifiers convert
रेकटीफायर _________ परिवर्तित करते हैं। 20-Jan-2017
Options:
1) high voltage to low voltage
2) low voltage to high voltage
3) AC to DC
4) DC to AC
Correct Answer: AC to DC

Q50.­ When net torque is zero, _______ will be constant.
जब नेट टार्क शून्य है, तब _______ स्थिर हो जाएगा । 20-Jan-2017
Options:
1) force
2) angular momentum
3) linear momentum
4) acceleration
Correct Answer: angular momentum
कोणीय गति

Q51.­ Newton’s first law is also known as .
न्यूटन का पहला नियम ______ के रूप में भी जाना जाता है।
20-Jan-2017
Options:
1) Law of friction
2) Law of moments
3) Law of Inertia
4) Law of motion
Correct Answer: Law of Inertia
जड़त्व का नियम

Q52. AV= constant, where A= area of cross-section and V= velocity of fluid. This equation is called .
AV= स्थिरांक, जहां A = अनुप्रस्थ काट का क्षेत्रफल और V = द्रव का वेग होता है | इस समीकरण को __________ है।
21-Jan-2017
Options:
1) Equation of discontinuity
2) Equation of continuity
3) Equation of sustenance
4) Equation of parallelism
Correct Answer:
Equation of continuity
निरंतरता का समीकरण

Q53. A body in equilibrium .
संतुलन में एक शरीर _______ 21-Jan-2017
Options:
1) can move with constant acceleration
2) is always at rest
3) can move with constant velocity
4) can move with variable acceleration
Correct Answer: can move with constant velocity
स्थिर वेग के साथ चल सकती है।

Q54. Which among the following is false about work?

निम्नलिखित में से कौन सी कार्य के बारे में गलत है? 21-Jan-2017
Options:
1) If displacement is zero, work is zero
2) Work done can be negative
3) It is a vector quantity
4) Its unit is Joule
Correct Answer: It is a vector quantity

Q55. What is inertia?
जडत्व क्या है?
21-Jan-2017
Options:
1) Tendency to resist change in the current state
2) Tendency to impart acceleration to a body
3) Tendency to bring a body to rest
4) Tendency to change its current state
Correct Answer: Tendency to resist change in the current state

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