Explore topic-wise MCQs in General Knowledge.

This section includes 1292 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.

501.

If you look into a mirror and find that the image (your reflection) is smaller than you, then the type of the mirror is:

A. concave mirror
B. convex mirror
C. plano-concave mirror
D. plane mirror
Answer» C. plano-concave mirror
Discussion
502.

If velocity is constant then acceleration is what?

A. constant
B. increasing
C. 0
D. infinite
Answer» D. infinite
Discussion
503.

If two coulomb of charge flows through any cross-section of a conductor in one second, what will be the current flowing through it?

A. 1 Ampere
B. 1/2 Ampere
C. 1/4 Ampere
D. 2 Amperes
Answer» E.
Discussion
504.

If two charged bodies having equal potential are connected through a conducting wire, then:_x005F_x000D_

A. magnetic induction flows
B. current flows from positive to negative
C. current will not flow
D. current will flow from neaative to positive
Answer» D. current will flow from neaative to positive
Discussion
505.

If the velocity of a body is halved its kinetic energy ________________.

A. become 4 times
B. becomes 1/4 th
C. is also doubled
D. becomes half
Answer» C. is also doubled
Discussion
506.

If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

A. lUV < lIR < lVIS
B. lUV > lVIS > lIR
C. lUV > lIR > lVIS
D. lUV < lVIS < lIR
Answer» E.
Discussion
507.

If the velocity of a body is doubled its kinetic energy ________________._x005F_x000D_

A. is also doubled
B. becomes half_x005F_x000D_
C. becomes 1/4 th_x005F_x000D_
D. become 4 times_x005F_x000D_
Answer» E.
Discussion
508.

If the velocity of a body becomes two times its initial velocity, its kinetic energy becomes n times its initial kinetic energy. What is the value of n?

A. 4
B. 6
C. 44228
D. 3
Answer» B. 6
Discussion
509.

If the speed of an object moving along a straight line is constant, its motion is said to be _________.

A. Uniform
B. Periodic
C. Circular
D. Non-uniform
Answer» B. Periodic
Discussion
510.

If the speed of an object moving along a straight line keeps changing, its motion is said to be _________.

A. Uniform
B. Periodic
C. Circular
D. Non-uniform
Answer» E.
Discussion
511.

If the vector sum of torques acting on a system is zero, then the object is in _______.

A. static equilibrium
B. translatory equilibrium
C. linear equilibrium
D. rotational equilibrium
Answer» E.
Discussion
512.

If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.

A. half
B. double
C. one-fourth
D. four-times
Answer» B. double
Discussion
513.

If the resistance of a conductor is doubled, the current gets halved. This is because

A. I = V - R
B. I = V/R
C. I = Rn/V
D. I = VR
Answer» C. I = Rn/V
Discussion
514.

If the radius of the earth decreases and its mass remains the same, then the value of "acceleration due to gravity" will _____ .

A. decrease
B. increase
C. remain the same
D. become zero
Answer» C. remain the same
Discussion
515.

If the momentum of a body is tripled, its KE will

A. become three times its original value
B. remain the same
C. become six times its original value
D. become nine times its original value
Answer» E.
Discussion
516.

If the power of a corrective lens is +2.0 D, then it is a

A. convex lens
B. concave lens
C. convex mirror
D. concave mirror
Answer» B. concave lens
Discussion
517.

If the mass of an object is 60 kgs, what will be its weight on the moon? (N=Newton)

A. 60N
B. 600N
C. 100N
D. 10N
Answer» D. 10N
Discussion
518.

If the kinetic energy of a body becomes 256 times its initial value, then the new linear momentum will be

A. 8 times the initial value
B. 16 times the initial value
C. the same as the initial value
D. 32 times the initial value
Answer» C. the same as the initial value
Discussion
519.

If the frequency of a sound wave of given velocity is increased , how will it affect its wavelength?

A. Its wavelength will increase
B. The wavelength will not be affected
C. Its wave length will decrease
D. Wavelength will keep increasing and decreasing alternately
Answer» D. Wavelength will keep increasing and decreasing alternately
Discussion
520.

If the initial velocity of a car is 5 m/s, and the final velocity is 10 m/s in 5s, then the acceleration is ___.

A. 10 m/s2
B. 0.1 m/s2
C. 1 m/s2
D. 5 m/s2
Answer» D. 5 m/s2
Discussion
521.

If the initial velocity of an object thrown upwards is 14 m/s, then the time taken for the object to reach its highest point will be ___.(a = 9.8 m/s2)

A. 1.5 s
B. 1.43 s
C. 1.34 s
D. 1 s
Answer» C. 1.34 s
Discussion
522.

If the force applied on the object is in the direction opposite to the direction of motion, the speed of the object __________.

A. increases
B. stops
C. decreases
D. no effect
Answer» D. no effect
Discussion
523.

If the force applied on the object is in the direction of its motion, the speed of the object __________.

A. increases
B. stops
C. decreases
D. no effect
Answer» B. stops
Discussion
524.

If the distance travelled by an object is zero, then the displacement of the object

A. is zero
B. is negative
C. is positive
D. may or may not be zero
Answer» B. is negative
Discussion
525.

If the Distance-Time graph is a straight inclined line then it represents _______________.

A. uniform speed
B. non-uniform speed
C. constant displacement_x005F_x000D_
D. non-uniform velocity
Answer» B. non-uniform speed
Discussion
526.

If the Distance-Time graph is a curve then it represents _______________._x005F_x000D_

A. uniform speed_x005F_x000D_
B. constant displacement_x005F_x000D_
C. uniform momentum_x005F_x000D_
D. non-uniform speed
Answer» C. uniform momentum_x005F_x000D_
Discussion
527.

If the current flowing through a circuit is 0.6 A for 6 mins, the amount of electric charge flowing through it is .......

A. 360C
B. 216 C
C. 60 C
D. 36 C
Answer» C. 60 C
Discussion
528.

If the angle of incidence formed on a concave mirror at a point is 30 deg then the angle of reflection will be

A. 15 deg
B. 30 deg
C. 60 deg
D. 90 deg
Answer» C. 60 deg
Discussion
529.

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is half of that of earth and radius is same as that of earth is _________________._x005F_x000D_

A. g/2
B. 4g
C. 2g_x005F_x000D_
D. g/4
Answer» B. 4g
Discussion
530.

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is _________________.

A. g/4
B. g/2
C. 4g
D. 2g
Answer» B. g/2
Discussion
531.

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of earth is _________________.

A. 2g
B. g
C. g/2
D. 4g
Answer» B. g
Discussion
532.

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is half as that of earth is _________________._x005F_x000D_

A. 2g
B. g/4
C. g/2
D. 4g
Answer» E.
Discussion
533.

If price of an article decreases from Rs 240 to Rs 220, when quantity demanded increases from 200 units to 210 units. Find point elasticity of demand?

A. 0.6
B. -1.8
C. -0.6
D. 1.8
Answer» D. 1.8
Discussion
534.

If price of an article decreases from P1 to Rs 25, quantity demanded increases from 900 units to 1200 units. If point elasticity of demand is ­2 find P1?

A. Rs. 20
B. Rs. 30
C. Rs. 25
D. Rs. 35
Answer» C. Rs. 25
Discussion
535.

If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?

A. Concave
B. Convex
C. Cylindrical
D. Plane
Answer» B. Convex
Discussion
536.

If ice floating on water in a vessel melts, the water level in the vessel _______.

A. increases
B. does not change
C. first increases before decreasing
D. decreases
Answer» C. first increases before decreasing
Discussion
537.

If lift is going up with acceleration, the apparent weight of a body is

A. may be more or less than true weight
B. more than the true weight
C. less than the true weight
D. equal to the true weight
Answer» C. less than the true weight
Discussion
538.

If I is the current through a wire and e is the charge of an electron, then the number of electrons crossing in t seconds will be given by

A. e/It
B. It/e
C. Ie/t
D. Ite
Answer» C. Ie/t
Discussion
539.

If electric resistance is to be decreased, then the number of resistances should be connected in ________________

A. Series
B. Parallel
C. Mixed arrangement
D. None of these
Answer» C. Mixed arrangement
Discussion
540.

If demand curve for alphonso mangoes is D = 25000 ­ 70P and supply curve is S = 10000 + 80P, find the equilibrium quantity?

A. 18,000 units
B. 2,000 units
C. 1,800 units
D. 200 units
Answer» B. 2,000 units
Discussion
541.

If an object with a mass of 25 kg is moving with a uniform acceleration of 8 , then the force exerted by the body is ........_x005F_x000D_

A. 200 N
B. 200 J
C. 200 ms-2
D. 200 ms2
Answer» B. 200 J
Discussion
542.

If an object moves with constant velocity,

A. it must have constant speed
B. it must have constant direction
C. it must have constant speed in constant direction
D. None of the above
Answer» D. None of the above
Discussion
543.

If an object moves in a purely rotatory motion, then each constituent particle of the body moves in a circle, the centre of which is located on a line is called _______.

A. the axis of rotation
B. the line of rotation
C. the spinning rod
D. the fixed line
Answer» B. the line of rotation
Discussion
544.

If an object moves in a circular path with uniform ________, its motion is called uniform circular motion.

A. speed
B. Time
C. Velocity
D. Acceleration
Answer» B. Time
Discussion
545.

If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

A. 0 m/s
B. 4.9 m/s
C. 14.7 m/s
D. 20 m/s
Answer» B. 4.9 m/s
Discussion
546.

If an object is placed at the center of curvature of a concave mirror, then the image formed will be

A. virtual and enlarged
B. virtual and diminished
C. real and of the same size
D. real and enlarged
Answer» D. real and enlarged
Discussion
547.

If an object is at infinity, what will be the position of an image formed due to convex lens?_x005F_x000D_

A. At infinity
B. At focal point
C. Beyond F2
D. On C2
Answer» C. Beyond F2
Discussion
548.

If an empty cylinder is half filled with a liquid, its center of gravity is

A. shifted upwards
B. shifted downwards
C. shifed neither upward nor downward
D. shifted upward or downward depending on the density of the liquid
Answer» C. shifed neither upward nor downward
Discussion
549.

If an electron and a photon have the same wavelength, then they will have the same

A. velocity
B. linear momentum
C. angular momentum
D. energy
Answer» C. angular momentum
Discussion
550.

If a sound travels from air to water, the quantity that remain unchanged is

A. velocity
B. frequency
C. wavelength
D. amplitude
Answer» C. wavelength
Discussion