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Q.1: Which one is the dimensionally correct equation ?

1. f=vt
2. S=Vit+1/2at2
3. V=St
4. V=f/t

B

Q.2: The rotational K.E of the hoop is equal to the------- ?

1. its translational K.E
2. half than its translational K.E
3. double than its translational K.E
4. four times than its translational K.E

A

Q.3: One radian is equal to---------- ?

1. 67.3°
2. 57.3°
3. 87.3°
4. 60°

B

Q.4: A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is-------- ?

1. Maximum
2. Zero
3. Equal to the weight of the stone
4. Less than the weight of the stone

C

Q.5: Linear momentum of a photon is---------- ?

1. zero
2. hv/c2
3. hv/c
4. c2/hv

A

Q.6: The angular speed for daily rotation of the earth in rad S-1 is-------- ?

1. 7.3 x 10 radians/second
2. 7.3 x 5 radians/second
3. 3.7 x 10 7.3 x 5 radians/second
4. 7.3 x 10-5 radians/second

D

Q.7: A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be------ ?

1. 9.8 N
2. 19.6 N
3. 129.4 N
4. 39.2 N

D

Q.8: Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be------ ?

1. πR
2. 2πR
3. 0
4. 4πR

C

Q.9: When the body moves with terminal velocity the acceleration in the body become---------- ?

1. 0
2. Maximum
3. Variable
4. Infinite

A

Q.10: According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to--------- ?

1. Flow rate
2. Volume of fluid
3. Mass of fluid
4. The density of the fluid

A

Q.11: For which position maximum blood pressure in the body have the smallest value ?

1. Standing straight
2. Sitting on chair
3. Sitting on ground
4. Laying horizontally

D

Q.12: Laminar flow usually occurs at speeds------- ?

1. Low
2. High
3. Very high
4. Some time high and some time low

A

Q.13: Stokes law is applicable if body has ----------shape ?

1. Rough
2. Square
3. Circular
4. Spherical

D

Q.14: For ----------- flow the path of the fluid particles cannot be tracked ?

1. Laminar
2. Streamline
3. Turbulent
4. Both A and B

C

Q.15: The time period of a second pendulum is---------- ?

1. 4 seconds
2. 3 seconds
3. 2 seconds
4. 6 seconds

C

Q.16: The product of the frequency and time period is equal to--------- ?

1. 1
2. 2
3. 3
4. 4

A

Q.17: Electrical resonance is observed in---------- ?

1. Radio
2. Microwave oven
3. Both in radio and microwave oven
4. Neither in radio nor in a microwave oven

A

Q.18: A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?

1. 0
2. 1
3. 2
4. 3

B

Q.19: Forced vibration is known as--------- ?

1. Simple harmonic vibration
2. Natural vibration
3. Driven harmonic vibration
4. Free vibration

C

Q.20: If a material object moves with speed of light its mass becomes --------- ?

1. equal to its rest mass
2. double of its rest mass
3. infinite
4. zero

C