Question # 1

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

Choose an answer

Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Choose an answer

5 volt

3 volt

15 volt

9 volt

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Choose an answer

1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

In a transistor, if the central region is p-type then this type of transistor is known as

Choose an answer

p-n-p transistor

n-p-n transistor

either of these

none of these

The length of rotating vector (on a certain scale) represents the:

Choose an answer

Peak value of alternating quantity

RMS value of alternating quantity

Instantaneous value of alternating quantity

Either (B) or (C)

Either (A) or (B)

The magnifier forms a virtual image of the object at:

Choose an answer

Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

The most abundant isotope of neon is

Choose an answer

neon-20

neon-21

neon-22

neon-23

When a water droplet falling freely through air, the drag force on water droplet increases with th

Choose an answer

decrease in speed

increase in speed

pressure

none of them

Alternating current is produced by a voltage source which polarity:

Choose an answer

Remains the same

Reverse after period T

Keeps on reversing with time

Reverse after every time interval T/2

Both (C) and (D)

The value of LDR depends upon intensity of:

Choose an answer

Sound falling on it

Current passing through it

Magnetic field surrounding it

Light falling on it

Non of these

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Choose an answer

2 m

1 m

0.5 m

4 m

A tritium and alpha particle enter the magnetic field with same kinetic energy, what will be the ratio of their radii?

Choose an answer

3:4

√3: 1

√3: 4

√3:√2

The digital modulation is expressed in

Choose an answer

Bytes

Codes

Bits

None of these

A thin layer of oil on the surface of water looks colored due to:

Choose an answer

Diffraction of light

Reflection of light

Dispersion of light

Interference effect of light

For keeping a body in circular motion,the force required is

Choose an answer

Centripetal

Centrifugal

Radial

Tangential

Period of typical radio waves is

Choose an answer

1 × 10^-8 sec

1 × 10^-6 sec

1 × 10^-5 sec

If a lens is cut into two piece perpendicular to the principal axis and only part is used the intensity of the image:

Choose an answer

Remains same

1/2 times

2 times

Infinite

In projectile motion when a body is projected upward it must have

Choose an answer

Initial velocity

Angle θ < 90^o

Falling under gravity

All of these

A diffraction pattern is obtained using a beam of red light What will happen if the red light is replaced by blue light?

Choose an answer

No change

Diffraction bands become narrower and crowded together

Bands become broader and farther apart

Bands disappear

The modulus of elasticity of a liquid is:

Choose an answer

Zero

1

Infinity

A value not one of those mentioned above

The unit of power is

Choose an answer

Erg

KW

Watt

both B and C

A constant volume gas thermometer is more sensitive than liquid thermometer because

Choose an answer

Gas expand more than liquid

Gases are easily obtained

Gases are much lighter

Gases do not easily change their state

More Classes

Other Links

Physics General Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer