Physics · NDA previous year questions

679 questions asked across 18 exam years, newest first

Year-wise papers Topic-wise questions

Practise this topic

2019 38 questions

Q562019 · 21 Apr 2019
Who among the following has explained the phenomenon of photo-electric effect ?
1. A.Max Planck
2. B.Albert Einstein
3. C.Neils Bohr
4. D.Ernest Rutherford
Show answer
Answer: B
Q582019 · 21 Apr 2019
Consider the following statements about a solenoid : 1. The magnetic field strength in a solenoid depends upon the number of turns per unit length in the solenoid 2. The magnetic field strength in a solenoid depends upon the current flowing in the wire of the solenoid 3. The magnetic field strength in a solenoid depends upon the diameter of the solenoid Which of the statements given above are correct ?
1. A.1, 2 and 3
2. B.1 and 3 only
3. C.2 and 3 only
4. D.1 and 2 only
Show answer
Answer: D
Q602019 · 21 Apr 2019
The focal length of the objective lens of a telescope is 50 cm. If the magnification of the telescope is 25, then the focal length of the eye-piece is
1. A.12·5 cm
2. B.5 cm
3. C.2 cm
4. D.10 cm
Show answer
Answer: C
Q612019 · 21 Apr 2019
Which one of the following forces is non-central and non-conservative ?
1. A.Frictional force
2. B.Electric force
3. C.Gravitational force
4. D.Mechanical force
Show answer
Answer: A
Q622019 · 21 Apr 2019
Suppose there are two planets, 1 and 2, having the same density but their radii are $R_{1}$ and $R_{2}$ respectively, where $R_{1} > R_{2}$ . The accelerations due to gravity on the surface of these planets are related as
1. A. $g_{1} > g_{2}$
2. B. $g_{1} < g_{2}$
3. C. $g_{1} = g_{2}$
4. D.Can't say anything
Show answer
Answer: A
Q632019 · 21 Apr 2019
1. A. $V_{A} < V_{B} < V_{C}$
2. B. $V_{A} > V_{B} > V_{C}$
3. C. $V_{A} = V_{B} = V_{C} \neq = 0$
4. D. $V_{A} = V_{B} = V_{C} = 0$
Show answer
Answer: B
Q642019 · 21 Apr 2019
1 dyne (a unit of force in CGS system) equals to
1. A. $1 0^{3} g cm/ s^{2}$
2. B. $1 0^{- 3} g cm/ s^{2}$
3. C. $1 0^{5} kg m/ s^{2}$
4. D. $1 0^{- 5} kg m/ s^{2}$
Show answer
Answer: D
Q652019 · 21 Apr 2019
1. A. $C D$ and $B C$
2. B. $B C$ and $A B$
3. C. $C D$ and $A B$
4. D. $A B$ and $C D$
Show answer
Answer: C
Q662019 · 21 Apr 2019
Which one of the following statements regarding a thermos flask is NOT correct?
1. A.The walls of flask are separated by vacuum and made of glass which is a poor conductor of heat
2. B.The glass walls themselves have shiny surfaces
3. C.The surface of inner wall radiates good amount of heat and the surface of outer wall absorbs some of the heat that is radiated from the inner wall
4. D.The cork supports are poor conductors of heat
Show answer
Answer: C
Q672019 · 21 Apr 2019
'Black hole' is a
1. A.huge black star which has zero acceleration due to gravity on its surface
2. B.star which has moderate acceleration due to gravity on its surface
3. C.star which has collapsed into itself and has large acceleration due to gravity on its surface
4. D.star which has collapsed into itself and has zero acceleration due to gravity on its surface
Show answer
Answer: C
Q692019 · 21 Apr 2019
When a beam of white light passes through a glass prism, the colour of light beam that deviates the least is
1. A.Blue
2. B.Red
3. C.Green
4. D.Violet
Show answer
Answer: B
Q732019 · 21 Apr 2019
Which one of the following minerals is used as a fuel in nuclear power stations?
1. A.Bauxite
2. B.Quartz
3. C.Feldspar
4. D.Pitchblende
Show answer
Answer: D

2018 41 questions

Q512018 · 9 Sept 2018
Directions
Directions : The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below. Code : Statement I : The pitch of the sound wave depends upon its frequency.
Statement II : The loudness of the sound wave depends upon its amplitude.
1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
3. C.Statement I is true but Statement II is false
4. D.Statement I is false but Statement II is true
Show answer
Answer: B
Q522018 · 9 Sept 2018
Directions
Directions : The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below. Code : Statement I : The pitch of the sound wave depends upon its frequency.
Statement I : Sound wave cannot propagate in vacuum. Statement II : Sound waves are elastic waves and require a medium to propagate.
1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
3. C.Statement I is true but Statement II is false
4. D.Statement I is false but Statement II is true
Show answer
Answer: A
Q532018 · 9 Sept 2018
The frequency of ultrasound waves is
1. A.less than 20 Hz
2. B.between 20 Hz and 2 kHz
3. C.between 2 kHz and 20 kHz
4. D.greater than 20 kHz
Show answer
Answer: D
Q542018 · 9 Sept 2018
The magnetic field strength of a current-carrying wire at a particular distance from the axis of the wire
1. A.depends upon the current in the wire
2. B.depends upon the radius of the wire
3. C.depends upon the temperature of the surroundings
4. D.None of the above
Show answer
Answer: A
Q572018 · 9 Sept 2018
The full form of LED is
1. A.Light Emitting Diode
2. B.Light Emitting Device
3. C.Light Enhancing Device
4. D.Light Enhancing Diode
Show answer
Answer: A
Q592018 · 9 Sept 2018
Consider the following circuit : Which one of the following is the value of the resistance between points A and B in the circuit given above?
1. A. $\frac{2}{5} R$
2. B. $\frac{3}{5} R$
3. C. $\frac{3}{2} R$
4. D. $4 R$
Show answer
Answer: B
Q602018 · 9 Sept 2018
The absolute zero temperature is 0 Kelvin. In °C unit, which one of the following is the absolute zero temperature?
1. A. $0^{\circ} C$
2. B. $- 100^{\circ} C$
3. C. $- 273.15^{\circ} C$
4. D. $- 173.15^{\circ} C$
Show answer
Answer: C
Q612018 · 9 Sept 2018
Consider the following statements about visible light, UV light and X-rays : 1. The wavelength of visible light is more than that of X-rays. 2. The energy of X-ray photons is higher than that of UV light photons. 3. The energy of UV light photons is less than that of visible light photons. Which of the statements given above is/are correct?
1. A.1, 2 and 3
2. B.1 and 2 only
3. C.2 and 3 only
4. D.1 only
Show answer
Answer: B
Q622018 · 9 Sept 2018
The time period of oscillation of a simple pendulum having length $L$ and mass of the bob $m$ is given as $T$ . If the length of the pendulum is increased to $4 L$ and the mass of the bob is increased to $2 m$ , then which one of the following is the new time period of oscillation?
1. A. $T$
2. B. $2 T$
3. C. $4 T$
4. D. $T /2$
Show answer
Answer: B
Q632018 · 9 Sept 2018
The connecting cable of electrical appliances like electric iron, water heater or room heater contains three insulated copper wires of three different colours—red, green and black. Which one of the following is the correct colour code?
1. A.Red—live wire, Green—neutral wire, Black—ground wire
2. B.Red—neutral wire, Green—ground wire, Black—live wire
3. C.Red—live wire, Green—ground wire, Black—neutral wire
4. D.Red—ground wire, Green—live wire, Black—neutral wire
Show answer
Answer: C
Q642018 · 9 Sept 2018
1. A. $R_{1} > R_{2} > R_{3}$
2. B. $R_{1} < R_{3} < R_{2}$
3. C. $R_{3} < R_{1} < R_{2}$
4. D. $R_{3} > R_{2} > R_{1}$
Show answer
Answer: B
Q652018 · 9 Sept 2018
Consider the following statements about a microscope and a telescope : 1. Both the eyepiece and the objective of a microscope are convex lenses. 2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece. 3. The magnification of a telescope increases with the increase in focal length of its objective. 4. The magnification of a microscope increases with the increase in focal length of its objective. Which of the statements given above are correct?
1. A.1 and 3 only
2. B.1 and 4
3. C.2, 3 and 4
4. D.1, 2 and 3
Show answer
Answer: D
Q662018 · 9 Sept 2018
A planet has a mass $M_{1}$ and radius $R_{1}$ . The value of acceleration due to gravity on its surface is $g_{1}$ . There is another planet 2, whose mass and radius both are two times that of the first planet. Which one of the following is the acceleration due to gravity on the surface of planet 2?
1. A. $g_{1}$
2. B. $2 g_{1}$
3. C. $g_{1} /2$
4. D. $g_{1} /4$
Show answer
Answer: C