Latest Posts

If In A Lottery There Are 5 Prizes And 20 Blanks Then The Probability Of Getting A Prize Is

1) 1/5 2) 2/5 3) 4/5 4) None of these Solution: Option (1) 1/5 Total number of prizes = 5... View Article

1) 9/64 2) 1/64 3) 1/16 4) 9/16 Solution: Option (4) 9/16 Total number of cards = 52 Number of... View Article

1) 3/52 2) 3/13 3) 4/13 4) None of these Solution: Option (2) 3/13 In a pack, total number of... View Article

1) 2/7 2) 1/7 3) 3/7 4) None of these Solution: Option (2) 1/7 We know that the non-leap year... View Article

1) 0 2) 1 3) 1/2 4) None of these Solution: Option (2) 1 If a die is thrown, the... View Article

1) 1/8 2) 1/4 3) 1/2 4) None of these Solution: Option (3) 1/2 If three coins are tossed, the... View Article

1) 1/52 2) 1/26 3) 1/18 4) None of these Solution: Option (2) 1/26 In a pack, there are 52... View Article

In the following ways the first law of thermodynamics affects lives: We convert the chemical energy present in the food... View Article

The area under the velocity-time graph will give us the magnitude of the displacement. This is because of displacement =... View Article

The orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s, but the velocity reduces with... View Article

The relationship between escape velocity and orbital velocity is given by the following relationship: From this, we can conclude that... View Article

The impulse experienced by an object is the product of force and time. The momentum change of an object is... View Article

Velocity is the rate of change of the object’s position with respect to a frame of reference and time. Following... View Article

‘Doppler effect in physics is defined as the increase (or decrease) in the frequency of sound, light, or other waves... View Article

Yes, the Doppler effect depends on the distance. The sound frequency is higher when the distance is closer between the... View Article

The variation of the sound of the engine revving in a motor car best describes the Doppler effect. Consider a... View Article

The Doppler Effect in ultrasound measures the blood flow. The Doppler principle states that the frequency of reflected ultrasound is... View Article

Yes, the Doppler effect is applicable to light too. Doppler effect of light can be described as the apparent change... View Article

Doppler effect is the apparent change in the frequency of waves due to the relative motion between the source of... View Article

Stress does not depend on Young’s modulus in the elastic region. Hooke’s law states that stress is directly proportional to... View Article