If there were a reduction in gravitational effect, which of the following forces do you think would change in some respect?
1. Magnetic force
2. Electrostatic force
3. Viscous force
4. Archimedes's uplift
Subtopic: Newton's Law of Gravitation |
57%
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Two batteries of emf 4 v and 8 V with internal resistance 1Ω and 2Ω respectively are connected to an external resistance R = 9Ω as shown in figure. The current in circuit and the potential difference between P and Q respectively will be
1. 
Subtopic: EMF & Terminal Voltage |
61%
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A body at a temperature of 728 ° C and has surface area 5 cm2, radiates 300 J of energy each minute. The emissivity is
(given Boltzmann constant
)
(given Boltzmann constant
)1. e = 0.18
2. e = 0.02
3. e = 0.2
4. e = 0.15
Subtopic: Stefan-Boltzmann Law |
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Considering normal incidence of ray, the equivalent refractive index of combination of two slabs shown in figure is
1. 1.8
2. 1.43
3. 2
4. None of the above
2. 1.43
3. 2
4. None of the above
Subtopic: Refraction at Plane Surface |
55%
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Three particles having charges in the ratio of 2 : 3 : 5 produce the same point on the photographic film in Thomson experiment. Their masses are in the ratio of
1. 2 : 3 : 5
2. 5 : 3 : 2
3. 15 : 10 : 6
4. 3 : 5 : 2
Subtopic: Various Atomic Models |
55%
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A black body emits heat at the rate of 20 W. When its temperature is 727 ° C. Another black body emits heat at the rate of 15W, when its temperature is 227 º C. Compare the area of the surface of the two bodies, if the surrounding is at NTP.
1. 16 : 1
2. 1 : 4
3. 12 : 1
4. 1 : 12
Subtopic: Conduction |
51%
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The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate by using the formula . If the maximum errors in the measurement of force and length are 4% and 2% respectively, then the maximum error in the measurement of pressure is
1. 1%
2. 2%
3. 8%
4. 10%
Subtopic: Errors |
89%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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